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 imperti.”’ 
T am, Gentlemen, your most obedient servant, 
WitriaM Crark. 
P.S. I beg that the notice relative to the Venus orbiculata of 
Montagu, in my paper on the genus Cecum, 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 Frenericx M‘Coy, Professor of Geology and 
Mineralogy in Queen’s College, Belfast. 
[Continued from p. 179. ] 
Enoploclytia (M‘Coy), n. g. 
Etym. évorrAos, armatus, and Clytia. 
Gen. Char. Carapace fusiform, back rounded, sides convex, 
gently compressed, posterior end shghtly narrowed and deeply 
FILS 
> =~. 
Seater 5s 8 
Re SRS OI >"Q 
i Wes SRS LESS 
2 2 > 33 S332 2? A 
3 oS eee) =) x 
x 5 
es sas 
4.) ANS x 
2 SEs 
22 32.3 SIR? FQ, 
c 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 
