426 BULLID.E. 



last year^ in the hope of confirming the discovery ; but 

 we were unsuccessful. 



Its nearest ally appears to be the Amphisphyra globosa 

 of Loven (a Scandinavian species) : our shell, however, 

 is ear-shaped, instead of globosely oval, the spire is pro- 

 portionally broader, the mouth much wider, and the 

 sculpture peculiar, U. globosus exhibiting only the lines 

 of growth. 



5. U. expan'sus*, Jeffreys. 



Ani2)hisjphyra expansa, Jeffr. in Rep. Brit. Assoc. 1864, p. 330. 



Body gelatinous, clear white, sprinkled all over with minute 

 black specks : head or snout broad, bilobed in front : tentacles 

 large, triangular or ear-shaped, expanding sideways : eyes none : 

 foot oval, cloven in front, widely, deeply, and evenly forked 

 behind : ovary yellowish -brown. 



Shell barrel-shaped, narrower at the top, dilated and some- 

 what angular at the sides, and expanding towards the base ; 

 it is nearly transparent, glossy, and slightly prismatic : sculp- 

 ture apparently none ; but under the microscope may be seen 

 a few slight and indistinct spiral lines and a frosted appearance: 

 epidermis inconspicuous: colour wbitish, except the nucleus 

 or embryonic whorl, which is brownish -yellow : spire abruptly 

 truncated : tvliorls 3-4, compact, and angulated at the top ; 

 the first is oval, twisted inwards, and shghtly projects beyond 

 the rest : suture deep and channelled : mouth pear-shaped, not 

 extending to the spire : base expanded and rounded : outer lip 

 flexuous ; outer corner bluntly angular ; inner corner receding 

 and incurved : inner lip folded over the pillar, wanting on the 

 upper part : pillar nearly straight above, and curved below : 

 fold obscure: U7nhilicus narrow and groove-like, but well de- 

 fined by the flexure of the inner lip. L. 0*225. B. 0*175. 



Habitat : Muddy sand in 43 f. near Fetlar Island, 

 and in 82 f. between 40 and 50 miles S.S.E. of the 

 Whalsey or Out Skerries, both localities being in Shet- 

 land; rare. Professor Sars informs me that in 1865 

 his son dredged this species off the Loffoden Isles. 



* Spread out. 



