UTRICULUS. 425 



iish must commit as great ravages among the Utriculi 

 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 C/. 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^, Jeffreys. 



Am'phisfhyra 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 : sculjjture, numerous 

 fine, 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 Hues, but not so as to 

 make the surface reticulated : ej_)idermis inconspicuous ; colour 

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

 Up : sph^e small, truncated, and flat : whorls 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 comer not receding, nor 

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

 imperfect in this part) : inner Up 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. 



