Alycaeus gibbosulus Stoliczka, 1872
“ The animal is dusky grey, foot pale; tentacles long, pale at the base, further on dark, especially at the tips which are slightly thickened; eyes small, placed laterally at the bases of the tentacles, but the bulgings are not distinct; rostrum long, cleft at the end, reddish at the base on account of the fleshly colour of the manducatory apparatus.” (Stoliczka, 1872)
“In general character this interesting new species closely resembles the type of the genus, Al. gibbus, Fer., but the latter conspicuously differs by having the constricted portion of the last whorl much more produced and very much deflected, the height of the shell being also considerably less than the larger diameter of the shell. Eydoux who collected the species at Touranne in Cochin-China, says in his original description, that the operculum is membranaceous and not multispiral.” (Stoliczka, 1872)
“Von Pinang und Perak bekannt, in Kelantan ziemlich übereinstimmend, nur grösser, diam. 11, alt. 12.3 mm., äusserer Mundsaum stärker ausgebreitet, Zwischenraum zwischen äusserem und innerem Mundsaum wesentlich schmäler.” (Möllendorff, 1902)
“With this occurs another form, much less gibbous, and which may belong to a different species, but the specimens before me show considerable variation.” (Sykes, 1902)
Stoliczka (1872) original descriptions on Alycaeus gibbosulus – “A. testa gibboso turrita, anguste umbilicata, violaceo rubente, ultimo anfractu pallidiore, lutescente, apice albescente; anfractibus quinque, valde convexis, sutura profunda et simplici junctis; primo laevigato, tribus sequentibus transversim densissime striato-costellatis atque spiraliter striatis, ultimo gibbose inflato, Paulo distinctius costellato, prope aperturam breviter sed valde constricto, sub-laevigato, vix deflexo, post constrictionem tubule tenui, circiter duo ad tres mm longo, nonnunquam fere immerse, instructo: aperture circulari, modice lata, in adolescentibus margine simplici undique expansiusculo circumdata, in adultis bilabiata, labio interno extus tubuliforme producto, crassiusculo, externo dilatato atque tenui. Operculum solidum, latere interno corneo, convexiusculo, medio submammillato, multisipirato, impression musculari transverse ovate atque excentrica instructo, externo calcareo, concaviusculo, in superficie irregulariter rugosa.”
Kobelt (1902) descriptions on Alycaeus (Alycaeus) gibbosulus – “Schale eng genabelt, buckelig getürmt, violettrot. letzte Windung blasser, gelblich, Apex weisslich; Naht einfach, tief; 5 sehr gewölbte Windungen, die erste glatt, die 3 folgenden dicht rippenstreitig und mit Spirallinien, letzte buckelig aufgeblasen, etwas deutlicher gerippt, hinter der Mündung schmal und tief eingeschnürt, fast glatt, kaum herabgebogen, Nahtröhre hinter der Einschnürung, fein, 2-3 mm lang, mitunter fast eingesenkt; Mündung kreisrund, massig weit; Mundrand doppelt: innerer röhrenförmig vorgezogen, ziemlich dick, äusserer dünn, verbreitert. Deckel innen hornig, leicht gewölbt, mit zitzenförmigem Nucleus. vielen Windungen und einem quer eiförmigen exzentrischen Muskeleindruck, aussen konkav, verkalkt, unregelmässig gerunzelt.”
Alycaeus gibbosulus – “Diam. maj. 9.2, diam. min. 7, alt. testae 9.6; diam. Apert. int. 3.8, externae 4.8 mm.” (Stoliczka, 1872); Alycaeus (Alycaeus) gibbosulus – “H. 9.6, Durchm. 9.2:7 mm.” (Kobelt, 1902)
Type locality – “Penang” (Stoliczka, 1872)
Other localities – “Kelantan” (Möllendorff, 1902); “Kelantan, Malay Peninsula” leg. J. Waterstradt (Sykes, 1902)
Habitat – “along the base of the hills in thick jungle, under and on large blocks of rocks, generally between half decomposed vegetable matter.” (Stoliczka, 1872)