174 MOLLUSCA FROM THE CRAG. 



striae impressed upon a glossy surface ; spire hidden ; vertex umbilicated or funnel- 

 shaped; aperture narrow above, and expanded below; left lip slightly replicate, with 

 an obscure fold upon the columella. 



Axis, -j of an inch ; diameter, \. 



Locality. Cor. Crag, Sutton. 



This is by no means a rare species at the above locality. It differs a little, as 

 might be expected, from the Paris basin-shell, but not sufficiently to entitle it to 

 specific distinction. 



In perfect specimens the stria? may be observed over the whole surface, though 

 most distinct upon the base of the volution ; when seen, they appear fewer and 

 more distant than upon the French Eocene specimens, which are rather more 

 elongate or less conical, with a rounded vertex. In the Crag shell the upper part 

 of the lip is rather sharp, producing a funnel-shaped depression at the spire. 



3. Bulla acuminata. Brug. Tab. XXI, fig. 7, a — c. 



Bulla acuminata. Brug. Enc. Meth. Vers. torn. 1, p. 376, 1/89. 



— Phil. En. Moll. Sic. vol. i, p. 122, t. 7, fig. 18, 1836. 



— Phil. - - vol. ii, p. 96, 1844. 



— Grat. Not. sur les Fam. des Bull. p. 63, pi. 3, fig. 43-44, 1837. 



— S. Wood. Catalogue 1842. 



— Nyst. Coq. foss. de Belg. p. 457, t. 39, fig. 11, 1844. 

 Cylichna acuminata. Loven. Ind. Moll. Scand. p. 10, 1846. 



(Not Bulla acuminata of Min. Conch.) 



B. Testa minutd, subfusiformi, sup erne p arum attenuatd, sed acuminata, subtus rotun- 

 datd; in medio lavissimd ad basim striata; aperlurd angusle lineari, in/erne perparum 

 latiore ; columella basi obsolete uniplicatd. 



Shell small, subfusiform ; outer lip contracted, and acuminated at the upper 

 extremity, rounded at the lower part, smooth and glossy in the middle, finely 

 striated at the extremities ; stria? thicker, and more distinct around the base ; 

 aperture linear, expanded slightly below, with an obsolete fold upon the columella. 



Axis, -|- of an inch ; diameter, \ its length. 



Locality. Cor. Crag, Sutton. Recent, Mediterranean and British Seas. 



An abundant species in the Coralline Crag, but I have found it only in one 

 locality. In my Catalogue this name was given with doubt, as in the descriptions 

 at the above references it is spoken of as " lasvissima," and the figures do not well 

 represent our shell. Mr. Alder, however, informs me that he has lately obtained 

 a specimen in Lamlash Bay, and that Mr. Barlee got one also from Loch Fyne, both 

 of which are striated; the stria? upon the Mediterranean shell have, in all pro- 

 bability, been overlooked, as they are present in the British specimens. This shell 

 being convolute upon a nearly horizontal axis, the spire is of course hidden, the 

 outer lip being elevated, and so contracted at the upper part as to give it the 

 appearance of having an acuminated apex, and instead of approaching Bullina it 



