EN CHODONTI DJE. 
221 
Genus CIMOLICHTHYS, Leidy. 
[Trams. Amer. Phil. Soc. vol. xi. 1857, p. 95.] 
Sya (?) Plmthophorus, A. Gunther, Geol. Mag. vol. i. 1864, p. 115. 
Empo, E. I). Cope, Proc. Amer. Phil. Soc. vol. xii. 1872, p. 347. 
Trunk elongate-fusiform. Cranium as in Enchodus. Premaxilla 
m the form of a vertical lamina, externally ornamented, and either 
toothless or with a scries of minute teeth ; maxilla long and styli- 
f°rm, similarly oiiher toothless or with minute teeth where it 
enters the oral margin ; ectopterygoid bearing a single spaced 
senes of acute, laterally-compressed teeth, which are largest in 
front and sometimes exhibit a single posterior barb towards their 
a P ex ; palatine with a double longitudinal series of teeth, none 
barbed, the largest behind ; dentary thin, but so bent that it has a 
wide horizontal extent, with a close series of minute teeth on its 
extreme outer margin, another close series of larger teeth wilhin 
this, and a third inner series of relatively large recurved teeth, well 
®paced, and not barbed at the apex. Operculum strengthened on 
the inner side by a ridge extending horizontally backwards from 
the point of suspension. Vertebrie from 50 to 60 in number, about 
half being caudal; the centra at least as long as deep, much 
constricted, and marked with fine irregular longitudinal ridges. 
A series of large dermal scutes along the dorsal ridge between the 
°cciput and the dorsal fin ; smaller scutes along the course of the 
lateral line. 
One specimen of the trunk hypothetically ascribed to the so- 
called Enipo exhibits three longitudinal series of rhombic scutes on 
fhe flank of the abdominal region. Their “ apices are directed 
forwards, and the surface has a reticulate sculpture. In another 
species they appear to be smooth” (Cope). There is no certain 
evidence of intervening scales. 
Cimolichthys lewesiensis, Leidy. 
1835-44. Saurodon leanus, L. Agassiz, Poiss. Foss., Feuill. p. 55, and 
vol. v. pt. i. p. 102, pi. xxv c. figs. 30, 31 (err ore). 
1850. Saurodon leanus, F. Dixon, Geol. Sussex, p. 373, pi. xxx. 
figs. 28, 29, pi. xxxii *. fig. 10 (errors). 
1857. Cimolichthus leresiensis, J. Leidy, Trans. Amer. Phil. Soc. 
__ vol. xi. p. 06. 
1878. Cimolichthys leresiensis, E. T. Newton, Quart. Journ. Geol. Soc. 
vol. xxxiv. p. 795. 
88. Cimohchthi/s leresiensis, A. S. Woodward, Proc. Geol. Assoc, 
vol. X. p. 316. 
