PHOLID0PH0RID.E. 
403 
trunk with the dorsal, anal, and part of the caudal fins ; 
and a caudal pedicle with some well-preserved scales and 
the greater portion of the caudal fin. 
Presented by Edward Wilson , Esq., 1889. 
The following specimen indicates either an unusually large indi¬ 
vidual of Pholidophorus higginsi or an allied species :— 
41281. Portion of abdominal squamation with fragments of the 
paired fins; Bhaetic (Cotham Marble), Aust Cliff, near 
Bristol. Purchased, 1869. 
Pholidophorus crenulatus, Egerton^ 
[Plate XII. fig. 6.] J 
1843. Pholidophorus crenulatus, Sir P. Egerton, Proc. Geol. Soc*. 
vol. iv. p. 184. 
1852. Pholidophorus crenulatus , Sir P. Egerton, Figs. & Descript. 
Brit. Organic Bemains, dec. vi. (Mem. Geol. Surv.), no. 5, pi. v. 
1887. Isopholis cremdatus, K. A. von Zittel, Haudb. Palaeont. vol. iii. 
p. 216. 
1890. Pholidophorus crenulatus , Woodward & Slierbom, Catal. Brit. 
Foss. Vertebrata, p. 146. 
Typ>e. Two imperfect fishes ; British Museum. 
A species of slender proportions, attaining a length of about 015. 
Length of head with opercular apparatus equalling the maximum 
depth of the trunk and one-fifth of the total length of the fish. The 
rugose ornament of the head and opercular bones very feeble or 
absent; maxilla comparatively robust—this, the dentary, and sub- 
orbitals marked with delicate longitudinal striations; angle of the 
preoperculum with sparse, short, radiating ridges. Pelvic fins 
arising at a point twice as far from the caudal as from the pectoral 
extremity of the trunk; dorsal fin opposed to the space between the 
pelvic and anal fins. Scales of moderate size, the hinder margin 
coarsely crenulated, the anterior, inferior, and superior borders with 
a few fine parallel ridges of ganoine corresponding to the lines of 
growth ; flank-scales little deeper than broad. 
Form. <Sf Log. Lower Lias : Dorsetshire. 
P, 572-3. The two type specimens, described and figured loc. cit. 
1852 ; Lyme Begis. Egerton Coll. 
P.1046 a. Fine specimen 0-15 in length, shown of the natural size 
in PI. XII. fig. 6 ; Lyme Begis. Traces of ring-vertebrae 
( v .) occur in the abdominal region. Egerton Coll. 
