from the Philippine Islands. 353 



may be distinguishecl thus : — It is larger and lias a more 

 glossy appearance, caused by the abseuce of the fine spiral 

 striae whicli mark the surface of that species. The flame-like 

 ])ainting which ornaments the upper surface never extends 

 be}ond tlie pcripiiery, the base being of a uniform light or 

 dark horny tint. 



In the three specimens of L. ciliatum in the ^luseum 

 collection the base and especially the umbilicus exhibit vivid 

 flammulations. Also two out of these three specimens 

 have a strong carina bordering the umbilicus, a feature 

 entirely wanting in all the examples of the present species. 

 In the latter the periplicrial keel revolves up the spire and is 

 visible just above the suture, and a second thread-like carina 

 occurs upon the middle of the penultimate and two preceding 

 ■whorls, but is almost obsolete upon the last. In L. ciliatum 

 these keels or lirte are much less conspicuous. 



The ground-colour varies from reddish to whitish horn- 

 colour, and the amount of flame-like painting upon the upper 

 surface is more or less extensive, in some cases forming 

 merely a series of blotches at the suture. 



The typical examples of L. ciliatum were obtained in the 

 island of Luzon by Mr. Cuming ; but the occurrence of the 

 species in the Philippine Islands has not since been con- 

 firmed. 



13. Cyclotus euzonus, Dolirn. (PI. XVIII. figs. 17-19.) 



Hah. Palawan [Dohrn and Everett). 



A single specimen of this species was obtained by Mr. Eve- 

 rett, differing from the type in being entirely of a chestnut- 

 colour with the exception of a yellow narrowish zone at the 

 periphery. In form this species exactly resembles C. Boxalli 

 of Godwin-Austen, from North Borneo, but may be distin- 

 guished by difference of colour and its smooth thin epidermis, 

 which, in the Bornean shell, is thick, opaque, and striated. 



EXPLANATION OF PLATE XVIII. 



Figs. 1-3. Macrochlamys pseustes. 

 Figs. 4—6. Lamprocystis chlororhaphe. 

 Figs. 7-9. Trochonatmta paraguensis. 

 Figs. 10-13. Amphidromus quadrasi. 

 Figs. 14-16. Lagochilus siinilis. 

 Figs. 17-19. Cyclotus euzonus. 

 Figs. 20,21. Leptopoma paUnvanensis. 



