66 VELUTINA. 



variety from Kamtschatka. F. solida, ^artens (fig. 59), is founded 

 on a large, pink specimen, denuded of epidermis. 



The animal is said to discharge a very copious, tenaceous 

 clear white slime, which is frothy, and perhaps serves the 

 Yelutina for concealment. 



Y. LANIGERA, Moller. PI. 28, figs. 51, 52. 



Very thin and fragile, smoothish, incremental striae slight ; 

 epidermis yellowish brown, shortly, densely pubescent. 

 Length, 13 mill. 



Greenland, Finmark. 



V. PROLONG AT A, Cpr. 



Pink, under a smooth, thin, yellowish epidermis, the growth- 

 lines crossed by very fine slight spiral impressed striae ; whorls 

 3j, the last very large, suture deeply impressed ; aperture long 

 oval, junction of columellar and outer lip somewhat angulated. 



Length, 10 mill. 



Vancouver's Isl. 



Unfigured. My specimen is in too imperfect a condition for 

 illustration. 



Section LIMNERIA, H. & A. Adams, 1883. 



Y. ZONATA, Gould. PI. 28, figs. 53, 54. 



Thin, with sharp minute growth-striae ; whitish, with several 

 faint chestnut-colored revolving zones, under a yery thin 

 smoothish epidermis ; whorls less than three, spire minute, 

 suture deeply impressed ; columella flattened, with shallow 

 channel behind. Length, 11 mill. 



New England, northwards ; 



Arctic Seas of both continents. 



An arctic specimen measuring 21 mill, has been called var. 

 grandis by Mr. E. A. Smith. Sars has described a var. expansa 

 (fig. 53). It is F. canaliculata, Beck. Sometimes the zones are 

 absent. F. zonata has sometimes been placed erroneously in 

 the pulmoniferous genus Otina, the shell of which, although 

 much smaller, resembles it. 



