24s 
Sp. Char . — An elongated species, attaining a length of about 0‘ 2 m. 
Back not elevated, but depth of caudal pedicle contained probably nearly three 
times in the maximum depth of the abdominal region. Length of head with 
opercular apparatus slightly less than this maximum depth, and occupying 
one quarter of the total length of the fish to the base of the caudal fin ; 
maxilla and mandible with coarse longitudinal ridge-ornament, which is more 
or less irregular and anastomosing. Pelvic fins arising slightly nearer to the 
anal than to the pectoral fins ; dorsal fin, with about fifteen rays, arising just 
behind the middle point of the back, more than half as deep as the trunk at 
its point of origin ; anal fin with not less than eleven rays, arising just behind 
the middle of the dorsal fin. Principal flank-scales not much deeper than 
broad ; about twenty-five to thirty transverse series between the pectoral arch 
and the origin of the dorsal fin. 
General Form . — The type specimen is probably only a little distorted 
in the region of the caudal pedicle, which seems to be somewhat shortened 
and deepened. The figure (PI. IV, Pig.] 8) therefore shows approximately 
the original shape of the fish, though the fins are defective. 
Head . — The general proportions of the head are well displayed in side 
view in the type, while the coarse longitudinal ridge-ornament of the maxilla 
and mandible is seen in both specimens. The eye is relatively large, and 
there are evidently extensive cheek-plates. The maxilla is deepest behind, 
and its oral margin forms a slightly convex curve. The opercular apparatus 
is shown as an internal impression, which bears a groove where the deep 
suboperculum was overlapped by the operculum. There are traces of the 
usual branchiostegal rays and a median gular plate crushed beneath the 
mandible. 
Appendicular Skeleton . — As shown by the second specimen, the rays 
of the pectoral fin are more delicate than those of the other fins. They are 
at least fourteen in number, while the foremost and stoutest ray is fringed by 
large, slender fulcra. The pelvic fin, which is adpressed to the trunk and 
incomplete distally in the type specimen, cannot have comprised more than 
five or six rays, but these are rather large and stout : its fringing fulcra 
resemble those of the pectoral fin. r lhe dorsal fin seems to be nearly complete 
in the type specimen, and exhibits fourteen or fifteen well-spaced rays. Some 
of its basal fulcra are relatively large and marked with fine longitudinal 
