462 
ACTIXOPTERYGII. 
Soc. vol. xxxii. p. 215 (name only). [Imperfect fish ; Leicester 
Museum.] 
1889. Pholidophorus nitidus, A. S. Woodward, Trans. Leicester Lit. 
& Phil. Soc. n. s., pt. xi. p. 22. 
Type . Head and abdominal region, wanting fins ; British Museum. 
A very small species, apparently not exceeding 0*065 in length. 
Head with opercular apparatus occupying one-quarter of the total 
length of the fish; maximum depth of the trunk also equalling 
one-quarter of the total length, and the caudal pedicle robust. 
External bones coated with smooth ganoine. Dorsal fin opposed 
to the pelvic pair, which is situated at the middle point of the 
trunk. Scales large and smooth, the hinder margin slightly 
convex, scarcely serrated, but sometimes provided with from one 
to four slender acuminate denticles ; course of lateral line very 
conspicuous ; four longitudinal series of flank-scales much deeper 
than broad. 
In the original definition of this species, Egerton seems to have 
been misled by the distortion of the type specimen, and thus 
supposed the relative size of the head and depth of the trunk 
of the fish to be much greater than now proves to be the case. 
From an examination of all the known specimens, the present 
writer is convinced that the above amended definition is a correct 
expression of the facts. 
Form, Loo. Rhaetic : Gloucestershire and Leicestershire. 
P. 578. Tj’pe specimen, deepened by crushing in the abdominal 
region, wanting the greater portion of the cranium and 
caudal region ; from the Cot ham Marble, Aust Cliff, near 
Bristol. Egerton Coll. 
P. 3592. Imperfect fish, with traces of the dorsal and paired fins, 
but wanting the anal and caudal fins ; Cotham Marble, 
Aust Cliff. EnnisTcillen Coll. 
P. 3592 a. Group of remains of four associated large individuals, 
each wanting the hinder portion of the tail; Cotham 
Marble, Aust Cliff. Enniskillen Coll. 
41279. Three portions of trunk and a block of scattered scales; 
Cotham Marble, Aust Cliff. Purchased, 1869. 
P. 5932-33. Three specimens, described by the present writer, loc. 
cit. 1889 ; Paper Shales, Wigston, near Leicester. These 
fossils comprise the greater portion of the head and 
trunk with the paired and anal fins ; also an imperfect 
