FUSING. 63 



This appears to be a pretty constant form, the ribs large and 

 rounded and extending over the body-whorl ; an inner lip is 

 usually present in the larger specimens, presenting a well-defined 

 edge, raised above the columella. 

 F. PFEIFFERT, Phil. PL 38, fig. 155. 



Brownish yellow. Length, 2 inches. 



Hab. unknown. 



I know nothing about the species, which is described, I presume, 

 from a single specimen. Its validity is more than doubtful, as it 

 has no characters to separate it from a half dozen other species. 



F. MEYERT, Dunker. PL 38, fig, 156. 



Uniform white. Length, 7 inches. 



Hab. unknown. 



Said to differ from F. longicauda by its larger size, larger and 

 more rugose revolving ridges, slightly concave shoulder, etc. It 

 seems to differ from F. distans, var. Novae Hollandiae only in the 

 ribs not being continued over the body. It might well be con- 

 sidered a S3 r nonym of both .' 



F. LONGICAUDA, Bory. PL 38, fig. 157. 



Yellowish white ; epidermis brown, thin ; apex and end of 

 canal frequently brownish. Length, 5 to 6*5 inches. 



Ceylon. 



This is, perhaps, a F. colus without carina, or a F. turricula 

 without ribs on the body-worl. 



F. COUEI, Petit, PL 38, fig. 158. 



Yellowish-white. Length, 4 inches. 



Hab. Gulf of Mexico. 



The locality is as doubtful as the shell ; if the former is incor- 

 rect, the species might well be merged in the preceding one. 



F. GRACILLIMUS, Ads. and Reeve. PL 38, fig. 159. 



Light chestnut-brown. Length, 3 inches. 



Eastern Seas. 

 Very like F. turricula, Kiener, but more slender. 



F. ACUS, Ads. and Reeve. PL 38, fig. 160. 



Reddish brown ; spiral grooves fine, close-set, peculiarly flatly 



excavated. Length, 1-65 inches. 



China Sea, off Borneo. 

 The most slender and graceful of all the species of Fusus. 



