PHOLIDOMORIDiE. 
457 
21334. Fragmentary remains of a similar fish.; Barrow-on-Soar. 
Purchased, 1847. 
25409. A somewhat larger individual; Glastonbury. 
Cunnington Coll. 
36312. A smaller specimen, partly disturbed and distorted; Barrow- 
on-Soar. Presented by Miss Wilson, 1862. 
P. 3593 a. Imperfect fish nearly 0-075 in length ; Barrow-on-Soar. 
Enniskillen Coll. 
P. 1055-6. Five specimens varying in size and state of pre¬ 
servation ; Barrow-on-Soar. Egerton Coll. 
P.1056 a. Part of the head and abdominal region of a large fish, 
showing the striation of the maxilla and the comparative 
smoothness of the cranial roof and opercular bones; 
Barrow-on-Soar. Egerton Coll. 
*? cuaTGS 
Pholidophorws caudalis, sp. nov. 
[Plate XVIII. figs. 1, 2.] 
1844. Leptolepis caudalis, L. Agassiz, Poiss. Foss. vol. ii. pt. ii. p. 133 
(undefined). 
Type. Nearly complete fish ; British Museum. - 
A slender species, attaining a length of about 0’13. Length of 
head with opercular apparatus somewhat exceeding the maximum 
depth of the trunk, and contained about four-and-a-half times 
in the total length of the fish. External rugose ornament very 
feeble, the maxilla marked with few longitudinal striations. Pelvic 
fins arising considerably in advance of the middle point of the 
trunk, but nearer the anal than to the pectorals, and the dorsal 
fin arising directly opposite. Scales remarkably thin, the hinder 
margin convex and not serrated ; no flank-series, much deeper than 
broad. 
Form. § Loc. Lower Lias : Dorsetshire. 
All the following specimens were obtained from the neighbourhood 
of Lyme Begis 
P. 3664. The type specimen, shown of the natural size in PI. XVIII. 
fig. 1. The head is obliquely crushed, showing part of 
the cranial roof and the left side. All the opercular 
elements are distinct, and there appear to be traces of 
enlarged postclavicular scales. The ossifications in the 
