UTRICULUS. 425 



fish must commit as great ravages among the Utricidi 

 as the latter are said to do with regard to the Hydrobice. 

 This is the Voluta alba &c. of Walker, Bulla Reyul- 

 biensis of Adams on the Microscope, B. minuta of Wood- 

 ward, and the U. plicatus and U. discors of Brown ; the 

 fry is apparently B. denticulata of Adams. The second 

 of these names, although prior to that given by Mon- 

 tagu, is local and obsolete. 



B. Shell globular or oval, and thin. 

 4. U. ventro'sus"*, Jeffrevs. 



Amphisphyra globosa, Jeftr. in Ann. & Mag. N. H. 3rd ser. i. p. 47, pi. ii- 

 f. 6 (not A. globosa of Loven). 



Shell globosely ear-shaped (not unlike a Velutina), nearly 

 transparent, glossy, and slightly prismatic : sculpture, numerous 

 tine, curved, minute longitudinal striae, which are very close- 

 set on the upper edge of the body-whorl ; these striae are 

 crossed by a few indistinct spiral lines, but not so as to 

 make the surface reticulated : epidermis inconspicuous : colour 

 whitish, with a faint tinge of reddish-brown near the outer 

 lip : spire small, truncated, and flat : whorh 3, slightly angu- 

 lated at the top ; the last is disproportionately large, and the 

 first or central whorl is oval and intorted : suture very deep 

 and channelled : mouth expanded, nearly oval, contracted above 

 by the projection of the periphery ; base even and curved : 

 outer lip semicircular ; the upper part is on a level with the 

 spire ; outer corner rounded ; inner corner not receding, nor 

 incurved, as in the last species (but my solitary specimen is 

 imperfect in this part) : inner lip forming a whitish film, 

 which is spread over the upper part of the underside ; it is 

 folded over the pillar, behind which it forms a narrow umbi- 

 lical groove : pillar slight and curved : fold obscure. L. 0-125. 

 B. 0-1. 



Habitat : Mr. Barlee procured a single specimen by 

 dredging off Glenelg in Skye ; this is now in my col- 

 lection. I tried the same ground with Mr. Norman 



* Bellying out. 



