344 ME. E. A. SMITH OK KEW 



leviter incrassatum, sordide albidum, superne baud expansum, ad mar- 

 ginem columellarem subreflexum. 



Diam. maj. 37 millira., min. 26 ; alt. 20. Apertura 18 lata, 15 alta. 



Sah. Barit Mountain. 



TMs is a smooth depressed species with convex whorls, a wide 

 umbilicus, and the peristome scarcely expanded or reflexed except- 

 ing towards the umbilicus. The first two or three whorls have 

 stronger and more distant lines of growth than the last and 

 penultimate whorls, the change of sculpture beiug marked by a 

 distinct line which apparently indicates the termination of the first 

 season's growth. In young and very fresh specimens the fine 

 incremental lines have the appearance of being minutely gran- 

 ular. The wavy or more or less zigzag whitish markings almost 

 disappear upon the last third of the body-whorl. Beneath the 

 blackish peripherial zone, the dark chestnut ground-colour extends 

 about five or six millimetres, the rest of the base being of a 

 paler tint. 



6. Lagocheiltjs baeitensis. (PI. XXY. fig. 6.) 



Testa medioeriter umbilicata, turbinata, tenuis, albida ad apicem fusea, 

 epidermide olivaceo-fusca induta, strigis pallide rufis a sutura radiantibus 

 ornata ; anfractus 6, convexiusculi, in medio et inferne ad suturam carinati, 

 lineis incrementi tenuibus striati, ultimus ad peripheriam carinatus, inferne 

 obsolete spiraliter striatus, carina vel lira circa umbilicum interdumque 

 alia prope peripheriam instructus, antice vix descendens ; apertura intus 

 livida ; peristoma duplex, tenue, late et plane expansum, baud reflexum, 

 marginibus ad parietem fere interruptis. 



Diam. maj. 14| millim., min. 11 ; alt. 13^. Apertura 6 alta et lata. 



Hah. Toot of Barit Mountain, N.W. Borneo. 



This species is remarkable for its pale ground-colour, which, 

 with the exception of the spire, is mostly covered with a brownish- 

 olive periostracum. The apex is brown, and the body-whorl 

 exhibits numerous red markings which radiate from the suture. 

 The most characteristic feature of this species is the broad flat 

 expansion of the peristome, which is considerably, although not 

 entirely, interrupted where it joins the whorl. The notch at the 

 suture is very slight indeed. The keel or lira which encircles 

 the periphery is a little thicker than the others. 



7. Lagocheilits jtjcundus. (PI. XXV. fig. 7.) 



Testa late umbilicata, turbinata, castanea, lineis albis a sutura radiantibus 

 et angulatis supra ornata; anfractus 5, convexi, sutura subprofunda discreti. 



