72 
terno tenui, lato, planiusculo, supra ascendente, fornicato, dein 
compresso ; umbilico patulo ; anfractibus intus distinetis. 
Long. 1,;; lat. =8; alt. 4; une. 
Belonging to the genus Pterocyclos of Benson. 
14. Cyctostoma sictLiatum. Pterocyclos biciliatum, Mousson, 
Land- und Siiss. Moll. von Java, p. 49. t. 20. fig. 9. 
Several individuals of this species having been received, its locality 
is thus fixed. It is observable that the complete shell, which was 
not known to Mousson, exhibits a tubular spiracle near the aperture, 
similar to that apparent in C. spiraculum, Sow. ; also, that the aper- 
ture is circular, depressed, with the peritreme white, expanded, 
slightly reflected, and at the upper part faintly undulated. 
15. Scarasus piicatus, Fer. var. major. 
This variety, in place of the usual purple colour of the shell, ex- 
hibits a deep yellow ground, with four broad bands of dark brown 
colour. 
16. Scarasus Borneensis, A. Adams. 
17. AuRICULA suBNODOsA, nobis. <A. testd ovato-oblongd, 
crassa, albd, epidermide castaneo-fuscd, infra suturas decus- 
satim granosd, medio levi, ad basim striis decussatd ; anfrac- 
tibus convexiusculis, suturis distinctis, subcrenulatis ; anfractu 
ultimo superné longitudinaliter plicato-subnodoso ; aperturd 
medio paululum angustatd ; columelld biplicatd. 
Long. 2,4,; lat. 1,3; une. 
A species distinguishable from 4. Mide by the convexity of the 
upper whorls and the smoothness of their lower halves, the depth of 
the sutures, and the longitudinal nodulous folds which surround the 
upper part of the final whorl: the aperture is also proportionally 
wider than in 4. Midge. In the single specimen received, the colu- 
mellar lip has an interior protuberance above the upper fold. 
18. AuRIcULA PoLiTa, nobis. A. testd ovato-oblongd, basi an- 
gustiore, spird brevi ; epidermide castaneo-fuscd, nitidd ; striis 
numerosis minutissime granulosis circumdatd, granis superius 
distinctioribus ; aperturd medio coarctatd ; columelld tripli- 
cata, plicd infimd linear. 
Long. 1,5; lat. 8, unc. 
Although the characters of the aperture resemble those of 4. Jude, 
the form of the shell differs entirely in its greater breadth, and in the © 
shortness of the spire. 
19. AuURICULA FELIS, Lam. 
20. AURICULA MUSTELINA, Desh. 
21. NeERITINA CREPIDULARIA, Lam. Conch. Ill. fig. 25. 
22. Neritina Becxu, Reclus, Thes. Conch. fig. 13. 
23. NERITINA PIPERINA, Chemn. Thes. Conch. fig. 166, 167. 
