272 FOSSARUS. 



F. PusiLLUs, Gould. PL 52, fig. 8. 



Umbilicated, whitish, with minute spiral lines and three distant 

 spiral ribs on the body whorl. Length, 4 mill. 



Fishtown, Liberia, 

 Described as a Trichotropis. 



F. ATRATus, C. B. Ad. PI. 52, fig. 10. 



Minutely umbilicated, blackish, sometimes with a few white spota 

 on the last whorl, and several revolving keels; the species variable 

 in fiorm and number of keels, conic when young, subglobular when 

 mature. Length, 2 mill. 



Panama. 

 Section Phasianema, S. Wood. 1842. 

 F. RETicui.ATus, S. Wood. PI. 51, fig. 98. 



Rather solid, semitransparent, lustreless, with numerous, sharp, 

 distant longitudinal riblets crossed by more numerous, close spiral 

 strise, subimj^erforate ; whorls 4, rather convex, the last inflated, light 

 yellowish brown. Length, 1'5 mill. 



Atlantic Ocean (Porcupine Exped.) 



F. iuterjunctus, Jeffi'eys, Ms., is a synonym. 

 F. suLCATUs, S. Wood. PI. 51, figs. 94, 95, 99, 100. 



Spire elevated, whorls a little shouldered, the last large, with 

 about six spiral riblets, the interstices clathrate, yellowish white ; 

 lip denticulated ; umbilicus rather widely rimate. Length, 6 mill. 



Mediterranean Sea. 

 . It is F. clathratiis, Phil., F. costatus, Brocchi., F. minutus, Mich. 

 Two unfigured species from the Asiatic Seas, F. tornatilis, Gould, 

 from Hong Kong, and F. Ja,j)onicu>i, A. Ad., from Japan, were con- 

 sidered by the latter author synonymous with F. costatus. To this 

 Eastern synonymy must be added F. Stoliczkanus, Nevill (fig. 95.) 



Unfigured and Doubtful Species. 

 F. Garretti, Pease (Adeorbis costata, Garrett). Sandivich Is. 



F. GRANULUM, Brugnone. Mediterranean Sea. 



Section Isapis, H. & A. Adams, 1854. 

 F. FENESTRATA, Carp. PI. 52, fig. 11. 



Umbilicated, spirally lirate, the lirse acute, distant, about 9 on the 

 body whorl, the wider interstices with closer longitudinal sculpture; 

 light yellowish brown, epidermis shaggy. Length, 5-6 mill. 



Va7icouver^s Isl. to Lower California. 



