190 
ACTINOPTERYGII. 
Dorsal tin in front of anal ; a postclavicular 
plate . 
Dorsal tin opposed to part of much-extended 
r anal ; no postclavicular plate 
II. No enlarged palatine tooth. 
I alatine teeth in one longitudinal series ; 
no teeth barbed : no scutes, but minute 
scales 
Palatine teeth in two longitudinal series ; 
some ectopterygoid teeth semibarbed ; 
dermal scutes present, but not deepened 
on flank 
One much-deepened series of scutes on 
flank, supporting lateral line 
As Prionolepis, but with small upper and 
lower lateral scutes 
Large teeth at mandibular symphysis ; 
median dorsal scutes but apparently 
no others 
Eurypholis (p- 20')- 
ralaolycus (p- 211 )' 
ILalec (p. 212). 
/ 991 .) 
Ciniolichthys (p- 
. / OiM], 
Prionolepis (p. - s - 
Leytecodon (p* 
Pantopholis (p- 2'^' 
Genus ENCHODUS, Agassiz. 
[Poiss. Eoss., Feuill. 1835, p. 55, and vol. v. pt. i. 1®^’ 
S>yn. Isodus, J. J. Ileckel, in Russegger’s Reisen, vol. ii- P*” 
1819 . 
P- 342. _ j(57. 
Phasganodus, J. Leidy, Proc. Acad. Nat. Sci. PhilaJ- geol. 
Ischyrocephalus, W. von der Marck, Zeitschr. deu s 
Ges. vol. x. 1858, p. 248. T it- n o. 2, 
(?) Tetheodus, E. D. Cope, Bull. U.S. Geol. Surv. ter 
1874, p. 43. ^ Jabrb k.-k- 
Solenodon , D. G. Kramberger ( non Brandt, 1833), 
geol. Reichsanst. vol. xxxi. 1881, p. 373. j lxxi*’ 
Holeodon, D. G. Kramberger, Rad Jugoslav. Aka . 
1885, p. 18. , ra i ¥0 1. iii. 
Evrygnathus, J. \V. Davis, Trans. Roy. Dublin Soc. L J 
1887, p. 601. 
Trunk elongate-fusiform, both this and the head jj nft l 
pressed. Cranial roof exhibiting a deep median L , r ]ike the 
depression, its lateral and occipital margins ornamente ’ Q j ne . 
uepression, its lateral and occipital margins ( ,. lll0 jne. 
other external bones, with ridges and tubercles 0 spaced 
Mandible a little prominent, provided with an inner " 11 ' nrir „innl 
series of large slender teeth, the largest in front, also in 
series of minute teeth, all nearly <jr completely solid • P 1 * and 
the form of a vertical lamina, deepest in front, taperin- ^ g j en der, 
with a single spaced series of small teeth ; maxilla Ion,. a . a j a tir> e 
cither finely toothed or toothless at the oral border; I 
