442 
ACTIXOPTEKYGII. 
between the pectorals and the anal; dorsal and anal fins short- 
based, remote and more or less completely opposed ; caudal fin 
rounded. Scales robust, the majority with produced anterior 
angles, and those of the flank not deeper than broad. 
Lepidosteus (Clastes) fimbriatus, Wood. 
1846. Lepidosteus fimbriatus , S. V. Wood, Lond. Geol. Journal, pp. 6, 
122, pi. ii. fig. 9. 
Type. Fragment of mandible and operculum; British Museum. 
An imperfectly definable small species, known only by fragments. 
External bones ornamented with elongated tubercles of ganoine, 
usually arranged in more or less radiating series. Operculum 
slightly deeper than broad, its conspicuous ornament radiating from 
the antero-superior angle. Scales all smooth, none serrated or 
fimbriated, except a few narrow scales apparently from the anal 
region or from the base of the pelvic fins. 
The typical operculum measures 0016 in maximum depth and 
0*015 in maximum breadth. 
Form, Loc. Upper-Eocene : Hampshire. 
25252 # , 25254*. Bight operculum and fragment of dentary, the 
type specimens figured loc. cit. ; Hordwell Cliff. The 
fragment of jaw exhibits the bases of the large teeth in 
spaced series, with minute teeth on the outer side though 
none within. Presented by ISearles V. Wood , Esq., 1850. 
P. 1529 a. Three opercula, one being incomplete, and one sub¬ 
operculum ; Hordwell. Egerton Coll. 
P. 1700 a. Associated remains in block of sand, including operculum 
and portions of jaws ; Hordwell. Egerton Coll. 
P. 1529 b. Numerous head-bones chiefly of this species, but some 
comparatively large and coarsely marked ; Hordwell. 
Egerton Coll. 
P. 1529 c. Vertebrae; Hordwell. 
30295. Vertebrae and scales; Hordwell. 
48041 a. Vertebrae; Hordwell. 
Egerton Coll. 
Hastings Coll. 
John Brown Coll. 
P. 1529 d. One complete and two imperfect clavicles exhibiting 
fine interrupted ridges of ganoine on the outer face; 
Hordwell. Egerton Coll. 
