440 
ACTINOPTEKYGII. 
P. 2446. More imperfect specimen 0T85 in length, showing anterior 
spine and rudimentary articulated rays of pelvic fin. As 
in the previous specimens, t he slender, rod-like postclavu-le, 
extending downwards to the ventral border of the fish, 
hears a narrow wing along its hinder margin. Purchased. 
P. 5130. Two good specimens. Presented by Mrs. M. E. Fort, 1886. 
P- 2085. Another specimen 0-185 in length, in counterpart. Some 
calcifications evidently belong to the slime-canal extending 
from the occiput to the origin of the dorsal fin. 
Egerton Coll . 
P. 4135. Smaller specimen, also showing the calcifications for the 
slime-canal extending from the occiput to tho origin of 
the dorsal fin. Enniskillen Coll. 
P. 9447. Much-fractured specimen about 0-105 in length. 
Purchased. 
ZZ. 3 (Cracherode Catal.). Smaller specimen, imperfect dorsally. 
Cracherode Bequest. 
23110 a. Imperfect and distorted immature specimen, in counter- 
part. Purchased , 1848. 
Mene oblongus (Agassi/.). 
1833. Gasteronemus oblmgus, L. Agassiz, Poiss. Foss. vol. v. pt. i- 
p. 22, pi. i. 
Tape. Nearly complete fish ; Museum of Natural History, Paris. 
Closely resembling M. rhombeus, but more elongated, and ventral 
border more gently curved, not bent at the insertion of the pelvic 
fins. Maximum depth of trunk not exceeding its length from the 
pectoral arch to the baso of the caudal fin. 
dorm, t)- Loo. Upper JSocene : Monte Bolca, near Verona. 
P- 4134. Imperfect fish 0-21 in length. The calcifications along 
the slime-canal between tho occiput and the origin of 
the dorsal fin are distinct. Enniskillen Coll. 
P. 2087. Smaller specimen. The dentated sutures between the 
plates at the lower end of the anal fin-supports are shown 
in impression. Egerton Coll. 
A very small immature fish has also been described under the 
following name : — 
