72 
WPZLLRUliX : 0\ SOMI-: NIOAV SPKCIKS OF FOSSIJ, FISir. 
Swim bladder not well seen. . 
Scales are moderately pointed, and are ornamented with 
fine regular ridges which somewhat converge behind. 
Remarks. — From the form, proportion, and ornamentation 
of the head bones and also the sculpture of the scales. I consider 
the species to be new, and propose the specific nomen " Sum- 
miti," from the locality wliere I found the type. 
Form and Loc. : D Sliales. Middle Grits, at Summit, and 
Antley Gate, near Colne. both in Lancashire. 
Family : Palseoniscida?. 
Genus : Rlmdinichthys. 
R. Monensis Egerton, 
The writer has found well-marked remains of this fish in two 
separate localities, this being a new record for the Millstone 
Grit rocks. 
R. elegans sp. no v. 
Type and many fragmentary specimens in author's collection. 
Description. — Of the bones of the head, the opercular and 
scapular are ornamented with moderately fine ridges, which 
run more or less parallel to the long axes of the bones. On the 
mandible they have a similar arrangement, with the exception 
that a few of the more superior ones turn upwards to cut the 
superior border of the bone at an acute angle. The scales are 
large and have a highly characteristic ornamentation, viz., 
the principal flank ones are sculptured by well-marked, closely 
arranged, ganonine-coated ridges, which have the following 
arrangement, viz., they commence at the anterior two-thirds 
of the superior margin of the scale, in a regular series ; they then 
run down parallel to the anterior border, and turning round in 
succession at the anterior inferior angle, they sweep across the 
scale parallel to the inferior border. This arrangement leaves 
a space at the posterior superior corner of the scale, which is 
sculptured by ridges which run more or less obliquely in an 
irregular manner. On the anterior and posterior flank scales 
the sculpture is of the same general pattern, but the ridges tend 
