EXCHODOXTID.E. 
207 
Genus EURYPHOLIS, Pictet. 
[Poiss. Poss. Mont Liban, 1850, p. 28.] 
Syn. Saiirorhamphus, J. J. Heckel, Denkschr. k. Akad. Wiss., math.- 
naturw. Cl. vol. i. 1850, p. 217 (inaccurate definition). 
Form and proportions, arrangement of jaws and dentition as in 
Enchodus. Cranial roof almost completely covered with tubercular 
ornament; cheek-plates comprising the hinder portion of a small 
circumorbital series, and large posterior suborbitals, also orna¬ 
mented with tubercles. Preoperculum narrow and deep, its lower 
end expanded into a small, stout, posteriorly directed spine ; 
operculum triangular in shape, its transverse inner ridge extending 
from the point of suspension to the hinder angle ; branchiostegal 
rays about 15 in number. Yertebrse approximately 40 in number, 
the centra slender and much constricted. A large triangular orna¬ 
mented dermal plate fixed to the lower half of the clavicle; the 
pectoral fin, of moderate size, arising above this upon the flank of 
the fish; pelvic fins very large and far forwards. Dermal scutes 
well-developed, some slightly overlapping, and all ornamented with 
tubercles ; three or four large median scutes in series between the 
occiput and dorsal fin, and smaller scutes along the course of the 
lateral line, but none enlarged on the caudal pedicle. 
Many details in the osteology of this genus are illustrated by the 
specimens of the typical species described below. 
Eurypholis boissieri, Pictet. 
[Plate XI. fig. 7.] 
1850. EuryplioUs sulcidens, F. J. Pictet, Poiss. Foss. Mont Liban, 
p. 29, pi. iv. fig. 1. [Head and anterior abdominal region ; Geneva 
Museum.] 
1850. Eurypholis boissieri, F. J. Pictet, ibid. p. 30, pi. iv, figs. 2-4. 
1866. Eurypholis boissieri, Pictet & Humbert, Nouv. Kech. Poiss. Foss. 
Mont Liban, p. 102, pis. xv., xvi. 
Type. Head with abdominal region ; Geneva Museum. 
The type species, attaining a length of about 0-2. Head with 
opercular apparatus about twice as long as its maximum depth, 
occupying one third of the total length to the base of the caudal 
fin. Ornament consisting of closely-arranged rows of fine, well- 
separated tubercles, covering all the external bones and scutes. 
The large palatine tooth smooth and inclined a little forwards; 
some of the other teeth slightly fluted at the base of the crown. 
Operculum an almost equilateral triangle ; spine at the lower end 
