110 JIB. E. A. SMITH OK LAND-SHELLS FEOM [Feb. 5, 



Diam. 7 millim., alt. 4. 



Hab. Balabac. 



The perfoi'ation is very small and partly hidden by the reflexed 

 columellar margin, which is peculiarly produced and sinuated at 

 this part. It is more depressed than L. myops, the whorls are 

 more convex and the suture deeper. 



28. Lamprocystis st. johni (Godwin-Austen). 



Microcystina st. joJmi, Godwin-Austen, Proc. Zool. Soc. 1891, 

 p. 38, pi. iv. figs. 3, 3 a. 



Hab. Busau Hills and Palawan. 



The specimens from Palawan are a little darker in tint than the 

 type from Busau, but the intensity of the colour varies consider- 

 ably according to the ground-coloiu- upon which the specimens 

 rest. 



29. Sitala btjmbangensis. (Plate III. fig. 7.) 



Testa vix perforata, conica, fusco- cornea, nitida, ad peripheriam 

 Jtlo-carinata, lineAs inerementi levibus striata, inferne striis 

 concentricis temdssimis sculpta ; spira ohtvse conoidalis ; anfrac- 

 tus 6, convexi, lentea ccrescentes, sutura carina saturatiore margi- 

 nata sejuncti ; apertura parva, lunata ; peristoma teiiue, margine 

 columellari fortiter mcrassato, levifer rejlexo. 

 Diam. maj. 4*5 millim., min. 4, alt. 4*5. 

 Hah. Eumbang, Sarawak, and Mount Eabong. 

 Var. Testa typo paulo angnstior,anfractibus 61 striisque basalibus 



minus conspicuis. Diam. maj. 3'3 millim., min. 3*2, alt. 4. 

 Hab. Mulu Slountain, N. Borneo. 



The superior height in proportion to the diameter gives the 

 variety a more conoidal appearance than the type. In all other 

 respects they are practically similar. 



It is distinguishable from 8. angulata, Issel, by the absence of 

 spiral strise above, its more glossy surface, the more distinct 

 thread-like keel, and the more thickened columella. 



30. Sitala demissa. (Plate III. fig. 8.) 



Testa tenuissima, pellucida, cornea, angustissime perforata, turbi- 

 nata; anfractus 5, convexiusculi,Rpiraliter minute striati, lineisque 

 inerementi perobliquis tenuissimis sculpti, ultimus paulo ivjlatiis, 

 ad peripheriam carina Jiliformi cinctus, svpra et infra carinam 

 cequaliter convexus ; apertura oblique lunata ; peristoma tenue ; 

 columella ad insertionem paulum incrassata et reflexa. 

 Diam. maj. 3"5 millim., alt. 3*5. 



Hah. Mulu Mountain, N. Borneo ; and Busau, West Sarawak. 

 The more inflated body-whorl distinguishes this from the other 

 Bornean species of Sitala. Both the upper and lovi'er surfaces 

 are finely spirally striated, the striae on the base having a minutely 

 wavy appearance. 



