296 
ACIIXOPTERYGII. 
P, 4233. Vertically crushed head, pectoral fins, and some anterior 
scales, seen from above. The supratemporals are finely 
tuberculated. EnnisIciTlen Coll. 
19483. Imperfect fish about 0*47 in length, vertically crushed, 
displaying some of the slender neural spines and ribs of 
the axial skeleton, and the biserial fulcra on the dorsal fin. 
Purchased , 1845. 
P. 3634 a, b, P. 3641. Two equally large imperfect specimens, and 
one smaller individual showing head from the infero- 
lateral aspect. Enniskillen Coll. 
P. 3634 C, d. Imperfect fish about 0*43 in length, and a smaller 
distorted specimen. Enniskillen Coll. 
38122. Small specimen about 0*32 in length, much crushed and 
imperfect. Purchased, 1864. 
P. 2035, P. 3638 a. Two small specimens vertically crushed and 
shown from the ventral aspect. 
Egerton Sf Enniskillen Colls. 
P. 3634 g. Remains of small head, pectoral fin, and scales, probably 
of this species. Enniskillen Coll. 
Eugnathus minor, Agassiz. 
[Plate IV. fig. 3; Plate V. fig. 3; Plate VI. fig. 1.] 
1839. Eugnathus minor , L. Agassiz, Neues Jakrb. p. 118. 
1839-44. Eugnathus minor , L. Agassiz, Poiss. Foss. vol. ii. pt. ii. 
p. 103, pi. lviiia. fig. 1. 
Type. Portion of head and trunk ; Oxford Museum. 
A species of moderate size, attaining a length of about 0*35. 
Length of head with opercular apparatus not much exceeding the 
maximum depth of the trunk, and contained somewhat less than 
four times in the total length of the fish. Head comparatively 
broad, the width of the roof of the skull at the occiput equalling 
about one-half of its length : external bones smooth or with few 
small tuberculations; maxillary teeth small, slender behind and 
stouter in front; premaxillary teeth larger and robust; dentary 
teeth stout and well-spaced, relatively smaller and more numerous 
than in the type species, and splenial teeth small; operculum 
considerably deeper than broad. Fins and squamation as in the 
type species. 
Form. Sf Loc. Lower Lias : Dorsetshire. 
