Diplommatina canaliculata von Moellendorff, 1886
“This novelty is well characterize by the long regular conical spire, the distant and very sharp ribsm the curious angle at the base of the columella, which forms almosy a canal and is distinctly continued into both peristomes. The latter are prolonged round this angle into a spur-like excrescence. Similar formations are observed in several Indian and Chinese species, but in none are they so well developed as in this.” (Möllendorff, 1886)
“Durch die schlanke Gestalt auf den ersten Anblick der D. (S.) sykesi Fult. von Nord-Borneo ähnlich, aber durch die stärkere Skulptur und abweichende Mündungsform gut verschieden.” (Martens, 1908)
“The Gua Musang form is more variable than the others in regard to the ribbing. About 4% of the specimens thereform have the penultimate whorl almost entirely smooth, or with very few ribs. In some cases the ribs on the last whorl are very close set, in others they agree in spacing with those of the penultimate whorl. Some of these specimens too are a triffle broader than the majority, but about 0.1 mm.” (Laidlaw, 1949)
“D. schmidti Thiele, 1908, Kari Orang, Borneo. Judjing from Thiele’s figure this is a local race of canaliculata. It has a length of 4.2 mm and breadth of 1.7 mm.” (Laidlaw, 1949)
“Of the Malayan species of this subgenus, D. (Sinica) nevilli (Crosse) is the nearest in shape to this species, but it has the somewhat stouter and shorter shell. D. (S.) auriculata Mollendorff of Java is most allied species that seems to be a local form of this species.” (Habe, 1965)
“The Bornean material shows less variability than the W. Malaysian specimens, but fits well into this species. The type of D. aldrichi was not available for comparison. Its identity and whereabouts remain somewhat doubtful.” (Vermeulen, 1993)
Möllendorff (1886) original descriptions on Diplommatina canaliculata – “T. dexrorsa, conico-turrita, costulis acutis distantibus sculpta, corneo-flavescens, spira elongate, regulariter conica, apice acuto; anfr. 10 perconvexi, ultimus initio constrictus, penultimo multo angustior, ad aperturam ascendens. Apertura verticalis, angulato-subcircularis, peristoma duplex, externum late expansum, reflexiusculum, internum sulco ab illo separatum, expansiusculum, superne appressum. Columella basi truncata, cum margine basali angulum canaliformem formans. Lamella columellaris, validiuscula fere ad marginem producta.”
Godwin-Austen (1890) original descriptions on Diplommatina aldrichi – “Shell elongately turreted, rather solid; sculpture strong distant costulation; colour dull ochre, spire becoming rapidly pointed, apex sharp; suture well impressed, whorls 8, convex, the constriction in centre above the aperture, penultimate the largest and rapidly decreasing in size above; aperture ovate-vertical; peristome double, expanded; columellar margin vertical and angulate below.”
Martens (1908) original descriptions on Diplommatina (Sinica) schmidti – “Schale schlank konisch getürmt, rechtsgewunden, mit verhältnismäßig starken vertikalen Rippen auf allen Umgängen, hellbräunlichgelb; der vorletzte Umgang der breiteste, der letzte etwas kleiner; Mündung kreisrund, mit starker Spindelfalte, Mündungssaum breit, flach, sowohl in der halben Höhe des Außeurandes, als unten an der Vereinigung von Kolumellar- und Unterrand eine vorspringende Ecke bildend.”
Kobelt (1902) descriptions on Diplommatina (Sinica) canaliculata – “Schale rechtsgewunden, getürmt kegelförmig, mit weitläufigen, scharfen Rippen, horngelblich; Gewinde regelmässig lang kegelförmig, Apex spitz; 10 sehr gewölbte Windungen, letzte am Beginn eingeschnürt, viel schmaler als die vorletzte, vorn ansteigend; Mündung senkrecht, eckig kreisrund; Mundrand doppelt: äusserer breit ausgebreitet, leicht umgeschlagen, innerer von ihm durch eine Furche getrennt, leicht ausgebreitet, oben angedrückt; Spindelrand unten abgestutzt, mit dem Unterrand eine kanalartige Ecke bildend, mit ziemlich starker, fast bis zum Rande vorgezogener Falte.”
Kobelt (1902) descriptions on Diplommatina (Diplommatina) aldrichi – “Schale rechtsgewunden, festwandig, stark und weitläufig gerippt, schmutzig ockerfarben; Gewinde schnell verschmälert, Apex spitz; Naht eingedrückt; 8 gewölbte Windungen, vorletzte grösser, über der Mündung eingeschnürt; Mündung senkrecht, eiförmig; Mundrand doppelt, ausgebreitet; Spindelrand senkrecht, unten eine Ecke bildend.
Habe (1965) descriptions on Diplommatina (Sinica) canaliculata – “The shell is small, rather tall and fusiform, attenuating toward the apex. Spire comprises about 9 whorls; the protoconch is smooth, while other whorls are well inflated with deep sutures and have distantly placed lamellate costae, about 20 in number on the penultimate whorl which is the largest in diameter. Aperture is thickened and roundly triangular in shape, with an angle at the distal end of the columellar margin, and also has a tooth on the columellar margin.”
Vermeulen (1993) descriptions on Diplommatina canaliculata – “Shell dextral, fusiform, last two or penultimate whorls widest; sides concave. Whorls 7-9 1/8, convex. Suture impressed. Constriction level with the parietal side of the peristome, with 1 parietalis, 1 longitudinal palatalis at the level of the peristome, 1 transversal palatalis, 1 columellaris. Tuba ¾-7/8 whorl. Radial ribs straight, distinct, high, rather thin, rather widely spaced to rather densely placed (3-5 ribs/0.5 mm on the penultimate whorl). Spiral striation present. Umbilicus closed. Aperture hardly tilted with regard to the the coiling axis; columellaris distinct, directed downwards. Peristome double, expanding; palatal side slightly sinuous, usually with an edge; basal side usually with an edge; basal edge not or slightly sinuous, sharp or protruding; outer peristome expanding beyond the inner; inner peristome with a palatal lip, expanding over the shell on the columellar side, little expanding on the parietal side.”
Diplommatina canaliculata – “Alt. 5, diam. 2 mill.” (Möllendorff, 1886); Diplommatina aldrichi – “Size: maj. diam. 1.75 mm; alt. axis 3.75 mm.” (Godwin-Austen, 1889); Diplommatina (Sinica) schmidti – “Länge 4,2 mm, Breite 1,7 mm, Mündung 1,4 mm.” (Martens, 1908); Diplommatina canaliculata from Batu Caves, Selangor – “Length 3.9 mm. Breadth max. 1.75 mm” (Laidlaw, 1949); Diplommatina canaliculata from Kramat Pulai, Perak – “Length 4 mm. Breadth max. 1.75 mm” (Laidlaw, 1949); Diplommatina canaliculata from Gua Musang, Kelantan – “Length 4.9 mm. Breadth max. 2.0 mm” (Laidlaw, 1949); Diplommatina (Sinica) canaliculata – “Height 2.7 mm, breadth 1.3 mm (young specimen)” (Habe, 1965); Diplommatina canaliculata – “Height 3.2-4.2 mm; width 1.3-1.6 mm; index 2.3-2.9. Height aperture 0.6-0.7 mm; width 0.5-0.7 mm.” (Vermeulen, 1993)
Type locality – Diplommatina canaliculata “ad Buket Pondong” Leg. R. Hungerford (Möllendorff, 1886); Diplommatina aldrichi “either Kusan or Penggiron districts, S.E. Borneo” leg. W. Doherty (Godwin-Austen, 1889); Diplommatina (Sinica) schmidti “Kari-Orang” (Martens, 1908)
Other localities – “Malaya; Batu Caves, Selangor” leg. Tweedie (Laidlaw, 1949); “Malaya; Kramat Pulai, Perak” leg. Tweedie (Laidlaw, 1949); “Malaya; Gua Musang, Kelantan” leg. Tweedie (Laidlaw, 1949); “Lake garden, Kuala Lumpur, Malaya” coll. Imadate/Jan. 17, 1962 (Habe, 1965); “Pulau Aur; N of Kampong Berhala” (Basch & Solem, 1971); “Kelantan; Gunung Reng, (54°3’00”N, 101°44’55”E)” (Davison & Kiew, 1990); “Kelantan; Gua Ikan, (5°21’10”N, 102°01’40”E)” (Davison & Kiew, 1990); “Kelantan; Batu Tampah, (4°51’25”N, 101°57’20”E)” (Davison & Kiew, 1990); “Kelantan; Gua Jaya, (5°05’40”N, 101°46’25”E)” (Davison & Kiew, 1990); “Kelantan; Gua Palda, (5°06’45”N, 101°45’30”E)” (Davison & Kiew, 1990); “Kelantan; Batu Pulau Raba, (5°04’15”N, 101°55’35”E)” (Davison & Kiew, 1990); “Kelantan; Ciku 5, (5°00’30”N, 102°12’30”E)” (Davison & Kiew, 1990); “Kelantan; Gua Gagak, (4°46’00”N, 101°58’20”E)” (Davison & Kiew, 1990); “Kelantan; Gua Sendok Utara, (5°11’40”N, 102°02’05”E)” (Davison & Kiew, 1990); “Kelantan; Gua Henderik, (4°45’20”N, 101°46’40”E)” (Davison & Kiew, 1990); “Kelantan; Ciku 4, (5°04’00”N, 102°11’45”E)” (Davison & Kiew, 1990); “Kelantan; Gua Panjang, (4°48’00”N, 102°00’00”E)” (Davison & Kiew, 1990); “Borneo. Kalimantan Selatan: Batu Apoh, approximately 35 km NE of Martapura” (Vermeulen, 1993); “Borneo. Kalimantan Selatan: Telaga Langsat, approximately 18 km SSW of Barabai” (Vermeulen, 1993); “Borneo. Kalimantan Selatan: Bt. Pagat, limestone hill 8 km SE of Barabai” (Vermeulen, 1993); “Borneo. Kalimantan Selatan: Nateh near Batu Tangga, approximately 18 km E of Barabai” (Vermeulen, 1993); “Borneo. Kalimantan Selatan: G. Halat, near border Kalimantan Timur along main road Banjarmasin-Balikpapan” (Vermeulen, 1993); “Borneo. Kalimantan Selatan: approximately 7 km N of Kintap” (Vermeulen, 1993); “Borneo. Kalimantan Selatan: Batu Tungga near Sarungga, W. of road Batulicin-Benualawas” (Vermeulen, 1993); “Borneo. Kalimantan Selatan: limestone escarpment W of km 6 road Benualawas-Batulicin” (Vermeulen, 1993); “Borneo. Kalimantan Selatan: limestone escarpment along road Benualawas-Limbungan” (Vermeulen, 1993); “Peninsular Malaysia. Selangor: Templer Park” leg. Liefinck (Vermeulen, 1993); “Indonesia. Sumatra: Batu Apoh, 40 km N. of Berastagi” leg. Clark (Vermeulen, 1993); “Indonesia. Java: Pulau Panaitan off the W coast of Java” leg. Whitten (Vermeulen, 1993)
NCB collection at Templer Park, Selangor, Malaysia.
Zoological Museum Amsterdam collection at Gunung Renayang, Kelantan, Malaysia.