458 
ACTINOPTERYGII. 
notochordal sheath are obscurely indicated, and the 
delicate ribs in the abdominal region are displaced. The 
position of the dorsal fin is indicated by its supports, 
about 13 in number, while the anal fin, showing 11 
supports, arises opposite its hinder end. The caudal 
fin is distinctly forked and exhibits some of the fulcra 
on its inferior margin. The incomplete left pectoral 
fin is exposed, and both pelvic fins, with their supports, 
buried in the delicate squamation. Enniskillen Coll. 
43055. Another fine specimen, displaying the fulcra on the pelvic 
and caudal fins. The form of some of the abdominal 
scales is also well shown. Purchased, 1871. 
35561-62, 35725. Three imperfect and distorted small specimens, 
displaying the delicate though completed ring-vertebrae 
; in the caudal region, and the stout haemal spines sup¬ 
porting the caudal fin. Purchased , 1858-59. 
38163-64, 38536-37. Four small specimens, variously imperfect. 
Purchased , 1864. 
39862, 39871. A similar specimen and a larger fish, the latter 
exhibiting 13 rays in the dorsal fin and remains of the 
fulcra on the pectoral and caudal fins. Purchased, 1866. 
43007. Fish elongated by distortion. Purchased , 1871. 
P. 939, a-c. Four imperfect specimens, two being labelled “ Lepto- 
lepis caudalis ’’ by Agassiz. Egerton Coll. 
P. 3662, P. 3664 a, P. 4370. Seven imperfect specimens, one shown 
of the natural size in PI. XVIII. fig. 2. Enniskillen Coll. 
P. 6067. Small fish displaying separate pleurocentra and hypocentra 
in the abdominal region, delicate ring-vertebrae in the 
caudal region. Presented by F. Harford, Esq., 1889. 
The following specimens may perhaps be unusually large examples 
of P. caudalis, but are too imperfect for certain determination: — 
P. 899 a, b. Imperfect fish, originally about 0*185 in length, showing 
minute fulcra on the median fins, also a distorted spe¬ 
cimen ; Lyme Regis. Egerton Coll. 
