LEPTOLEPIDiE. 
527 
P. 5731. Imperfect head, pectoral fin, and anterior abdominal 
region. Purchased , 1888. 
P. 7450. Imperfect example probably of this species. 
Purchased, 1895. 
Thrissops exiguus, Bassani. 
(P) 1867. Chirocentrites microdon ?, It. Kner, §itzungsb. k. Akad. Wiss., 
math.-naturw. Cl. vol. lyi. pt. i. p. 193, pi. iv. 
1879. Thrissops exiguus, F. Bassani, Verhandl. k. k. geol. Reicksanst. 
p. 163. 
1882. Thrissops exiguus , F. Bassani, Denkschr. k. Akad. Wiss., math.- 
naturw. Cl. vol. xlv. p. 210, pi. vi. figs. 1, 2. 
Type. Imperfect fish; Imperial Geological Survey, Yienna. 
A species closely resembling T. microdon, but described by 
Bassani as distinguished from the latter by the greater development 
of the pectoral fins, the more remote situation of the pelvic fins, the 
slightly greater number of vertebrae, and other characters. 
Form. Sf Loc. Cretaceous : Island of Lesina, Dalmatia, and 
(?) Comen, Istria. 
Not represented in the Collection. 
Thrissops, sp. 
1889. Thrissops sp. (cf. T. heckeli, Thiolliere), A. S. Woodward, Geol. 
Mag. [3] vol. vi. p. 455. 
An indefinable large species apparently related to T. formosus 
and T. heckeli, 1 known only from the undermentioned fragments. 
The head seems to have been comparatively small and the trunk 
deep; the length of the head with opercular apparatus being less 
than the maximum depth of the trunk. The small dorsal fin 
arises behind the origin of the anal fin. ,, 
Form. Sf Loc. Kimmeridgian : Dorsetshire. 
40336. Remains of greater portion of trunk with caudal fin about 
0*5 in length; Chapman’s Pool, Kimmeridge. 
Purchased, 1867. 
41219. Fragmentary fish about 0*4 in length ; Kimmeridge. 
Presented by J. C. Mansel-Pleydell, Esq., 1868. 
1 Under this name an imperfect large fish from the Lithographic Stone 
(Lower Eimmeridgian) of Cirin, Ain, France, is figured without description 
by V. Thiolliere, Poiss. Foss. Bugey,j>t. i. (1854), pi. x. fig. 1. The specimen 
is now in the Lyons Museum. ^ /- ***-x~$ ^ g gO JL f ^ 
