330 Prof. F. M'Coy on the Classification of 



That there are no errors in these observations would be an 

 undue assumption ; for who, on such subjects and in the exami- 

 nation of these minute objects, can hope to escape from occa- 

 sional error ? I invite malacologists to offer their corrections, if 

 I have differed on insufficient grounds from so eminent a natu- 

 ralist as M. Deshayes ; and I conclude with the evocation, 



"Si quid novisti rectius istis, 



Candidus imperii." 



I am, Gentlemen, your most obedient servant, 



William Clark. 



P.S. I beg that the notice relative to the Venus orhiculata of 

 Montagu, in my paper on the genus Caecum, in the ' Annals ' 

 for August, may be considered as cancelled. 



XXXIV. — On the Classification of some British Fossil Crustacea, 

 with Notices of new Forms in the University Collection at Cam- 

 bridge. By Frederick M'Coy, Professor of Geology and 

 Mineralogy in Queen's College, Belfast. 



[Continued from p. 179.] 



Enoploclytia (M'Coy), n. g. 



Etym. eVo7r\o9, armatus, and Clytia. 



Gen. Char. Carapace fusiform, back rounded, sides convex, 

 gently compressed, posterior end slightly narrowed and deeply 





Enoploclytia. 



notched for the insertion of the abdomen, much contracted 

 anteriorly, the front extended into a long, sharp -pointed de- 

 pressed rostrum, the sides of which are armed with three or 

 four strong spines ; one strong spine over the upper external 

 angle of the orbit ; eyes on short, thick peduncles ; nuchal 



