Rhaphaulus perakensis perakensis Smith, 1898
“This species is very closely allied to R. lorraini of Pfeiffer, from Penang, but differs in the following respects: - It is larger, and the body-whorl is ratber longer and more obliquely descending behind. The chief difference, however, consists in the sutural tube being curved, longer, and directed downwards and away from the peristome, whereas in R. lorraini it is shorter and directed upwards above the suture. At first I was inclined to think that possibly it might have been broken off short by accident, but a careful examination under the microscope seems to show that such is not the case. The peristome in both species, under a high power, has a very pretty appearance, being marked with minute wrinkled striae.” (E. A. Smith, 1899)
“Von R. lorraini besonders durch die Richtung des Röhrcliens unterschieden.” (Kobelt, 1902)
E.A. Smith (1899) original descriptions on Rhaphaulus perakensis – “Testa pupoidea, anguste umbilicata, fusco-purpurea, costulato-striata; spira superne conoidea, ad apicem obtusa; anfractus 6, convexi, penultimus gibbosus, ultimus minus convexus, pone oblique valde descendens; apertura intus purpureo-fusca; peristoma album, incrassatum, anguste expansum et reflexum; tubulus albus, a sutura pone labrum deorsum curvatus.”
Kobelt (1902) descriptions on Rhaphaulus perakensis – “Schale eng genabelt, lang eiförmig, rippenstreifig, purpurbraun; Gewinde oben kegelförmig, Apex stumpf; 6 gewölbte Windungen, vorletzte buckelig letzte weniger gewölbt, vorn schief, stark herabsteigend; Mündung innen purpurbraun; Mundrand weiss, verdickt, schmal ausgebreitet und umgeschlagen; Röhrchen weiss, von der Naht aus hinter dem Mundrande herabgebogen.”
Rhaphaulus perakensis – “H. 18.5, Durchm. 9, Mündungsweite 5 mm.” (Kobelt, 1902)
Shell height – 18.5 mm; Shell width – 9 mm. Aperture diameters – 5 mm.
Type locality – “Maxwell’s hill, Larut, Perak” (E.A. Smith, 1899)