froTTi Sumatra^ Java^ and Borneo. 133 



ginati, ultimus ad peripheriam acute carinatus, infra subplanus , 

 antice vix descendens ; apertura obliqua, parva ; peristoma albi- 

 dum, margine superiore sinuate, leviter reflexo, basali latius 

 expanse, superne umbilicum semiobtegente. 

 Diam. maj. 11, rain; 10 ; alt. 12 mill. 



Hah. Bantam, Java. 



This species is as conical as H. elata [vide Reeve's Conch. 

 Icon. fig. 1248), but the aperture is different, the basal mar- 

 gin being more curved. The apex of the spire is rather large 

 and obtuse and the upper whorls are considerably more con- 

 vex than the three last. The fine granulation of the surface 

 is invisible to the naked eje. The acute keel of the bodj- 

 whorl passes up the spire, giving a carinate appearance to the 

 suture. 



Leptopoma Whtteheadi. 



Testa conica, umbilicata, mediocriter tenuis, purpurascenti- vel 

 fuscescenti-cornea, maculis rufis sutura radiantibus picta, epider- 

 mide tenui sublamellata amicta ; anfractus 6, convexi, carinis 

 tenuibus 2-3 instructi, incrementi lineis striisque spiralibus incon- 

 spicuis sculpti, sutura subprofunda sejuncti, ultimus carinis ad 6 

 ornatus ; apertura modice magna ; peristoma anguste reflexum, 

 bimarginatum. 



Diam. maj. 12|, min. 10 ; alt. 12| mill. 



Hah. Northern Borneo. 



This interesting species was collected hy Mr. John White- 

 head, with whose name I have associated it. It is peculiar 

 on account of the epidermis, which upon the keels is produced 

 into very short tufts. The operculum is very thin, yellowish, 

 and consists of about eight whorls. 



In the British Museum are two specimens also from 

 Borneo which are smaller than those described, and differ also 

 in having the peristome of a darker colour, and the brown 

 markings radiate from the suture in an irregular zigzag 

 manner. 



Two other specimens from Bantam, in Java, also appa- 

 rently belong to this species. They are still smaller and 

 have the epidermis produced into short hairs upon the prin- 

 cipal ridges. 



