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. PFEIFFERI, Phil. PI. 38, fig. 155. 



Brownish yellow. Length, 2 inches. 



Hob. 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, Bunker. PI. 38, fig, 156. 



Uniform white. Length, 7 inches. 



Hob. 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. diKtan^ var. Novae Hollandiae only in the 

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

 sidered a synonym of both ! 



F. LONGICAUDA, Bory. PI. 38, fig. 15 f . 



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. PI. 38, fig. 158. 



Yellowish-white. Length, 4 inches. 



Hob. 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. GRACTLLIMUS, Ads. and Reeve. PI. 38, fig. 159. 



Light chestnut-brown. Length, 3 inches. 



Eastern Sea*. 



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. 



