PLATE CLIV. 



Fauna Suecica *, but we have no other authority for believing it to 

 be an inhabitant of our own seas, than that of Mr. Agneu, gardener to 

 the late dutchess of Portland, by whom it was discovered among the 

 Orkney Islands, and, in consequence, admitted into the collection of 

 British shells in the Portland Museum. 



One of the most striking characters of this shell, is a single cari- 

 tfiated ridge that surrounds the first or largest wreath of the shell, and 

 does not afterwards appear on either of the rest. This it may be 

 proper to notice, since the circumstance has been strictly mentioned 

 both by Linnaeus, Fabricius, (Faun. Groen.) and Chemitz, but it is 

 not certainly a constant criterion of the species : there was a variety 

 of this kind in the collection of the late Dr. Fordyce, at present in 

 v that of the Earl of Tankerville, in which the carinated ridge distinctly 

 traverses the whole shell in a spiral course, from the first wreath 

 nearly to the apex. — The latter was from Newfoundland. 



* Buccinum glaciale ; testa crassa magnitudine extimi articuli polliees, pallida, se- 

 cundum anfractus obsolete striata, acuminata superne conica. Anfractus infimus seu 

 maximus subcarinatus tst t sed haec carina in reliquis superioribus anfractibus evanescit, 

 cum sutura anfractuum evadat, quae attenuata. Basis gibba emarginata. Apertura ovata. 

 Labium extends crassum patulum, striis incumbentibus. Linn. Fn„ Succ. 



