FERNANDEZIA. 03 



Genus FERNANDEZIA Pilsbry, n. gen. 



Shell imperforate, varying from ovate to oblong-turrite, 

 thin, yellow or pale brown, glossy, striate or weakly plicate. 

 Initial I 1 /; to 1% whorls smooth or very delicately striate 

 spirally, semiglobose, forming an obtuse summit. Aperture 

 irregularly ovate, subvertical, the outer lip a little thickened, 

 having a smooth finish when adult; the columella short, bear- 

 ing a more or less prominent, spirally entering fold or la- 

 mella. Soft anatomy unknown. Type: F. ivilsoni. 



Distribution: Island of Juan Fernandez. The specie* ,-uv 

 figured on plate 14. 



These shells resemble species of Giessula and Leptachatina 

 so closely that only their geographic remoteness gives reason 

 for the belief that they will prove generically distinct, when 

 the soft parts can be examined. Like the genera mentioned, 

 the lip has a smooth, blunt finish in fully adult shells; there- 

 by differing from Subulina, Opens and Leptinaria, which 

 have the lip sharp and unthickened at all stages of growth. 

 It must be admitted that the shells, in Glessula, Leptachatina, 

 Fernandezia and Cochlicopa furnish no tangible character to 

 differentiate one from another genus. What real distinction 

 there may be in the animals remains to be discovered. 

 Whether reproduction in Fernandezia is oviparous or vivi- 

 parous is not known. 



In some forms I have seen excessively superficial and fine 

 spiral striae upon both embryonic and later whorls; in others 

 they are not discernible, at least in adult shells. 



Key to species of Fernandezia. 



I. Columella very short, with a strong median spirally 

 entering lamella. 



a 10y 2 x 6.2 mm. with G 1 /^ whorls ; periphery weakly 



subangular. expansa, no. 3. 



a 1 9 x 4.8 mm. with 6% whorls ; subplicate below suture, 



the last whorl rounded phUippiana, no. 4. 



a 2 lO 1 /.? x 5.8 mm. with 7i/> whorls ; finely striate. 



wilsoni, no. 5. 



