BERYCID^. 
401 
channel is tuherculated. The angular {ag.) has a similar 
conformation, but its tuherculated ridge is widened into an 
extensive radiately-ornamented area. The preoperculum 
(p.o^.) also exhibits a deep groove for the slime-canal, 
and is not much expanded at the angle. The other 
opercular bones display their characteristic rugose orna¬ 
ment. The deep and narrow operculum (op.) is produced 
into two short and broad spines at its hinder margin, the 
upper being connected by a strong ridge with the point of 
suspension. The suboperculum (.s.op.) is relatively small, 
with a large anterior ascending process. The inter¬ 
operculum (i.op.) is of remarkable extent. The upper 
expanded portion of the clavicle is more finely and closely 
ornamented than the opercular apparatus. The large and 
deep anterior scales are broken and displaced. 
Presented hy P. E. Coomhe, Esq., 1888. 
P. 5421-23. Tour fragments ; Lewes. 
Presented hy P. E. Coomhe, Esq., 1888. 
P. 7189. Head and anterior scales; Southover, Lewes. 
Presented hy J. S. Valentine, Esq., 1894. 
P. 6462-64. Four fragmentary small specimens, two displaying a 
small and delicate supraoccipital crest; probably from 
Sussex. BecTcles Coll. 
49868. Portion of large trunk; Lewes. Capron Coll. 
49865-67, 49872, 49888. Five fragmentary small specimens; Upper 
Chalk, near Guildford. Capron Coll. 
P. 388-9. Three imperfect fishes, two displaying a considerable part 
of the dorsa^l fin; probably from Kent. 
Presented hy the Earl of Dude, 1881. 
P. 9441. Fine distorted specimen; Eochester. Purchased. 
23017. Eemains of small head and trunk; Dover. 
Purchased, 1848. 
41104-05. Two imperfect heads, the first associated with some 
flank-scales; Lower Chalk, Hailing, Kent. 
Purchased, 1868. 
35712. Fine specimen, displaying the greater part of the paired 
and dorsal fins; Eochester. The pectoral fin consists 
PART rv. 2 d 
