Davis—On the Fossil Fishes of the Chalk of Mount Lebanon. 509 
composed of sixteen rays, of which the anterior two are short and spinous; 
the remainder are soft, divided, and articulated. The fifth or sixth ray, which 
is the longest, attains a length of half an inch. The anal fin is situated 
posteriorly, and extends 0°6 inch from the base of the tail, to which the 
posterior rays extend. The anterior rays are 0:45 inch in length; with the 
exception, perhaps, of the first they are not spinous, but similar to those of 
the dorsal fin. The fins are supported by strong interspinous bones. The 
caudal fin is moderately large, bilobate, each lobe supported by a series of 
imbricating rudimentary rays. The tail is connected with the vertebral column 
by a series of broad, flat plates. Each lobe is composed of ten strong articulated 
dichotomizing rays, those of the upper one attaining 0°65 inch, and of the lower 
one 0°8 inch in length. 
Of the paired fins the pectorals are comparatively feeble; they are attached 
to the pectoral arch 0°25 inch above the abdominal line. The ventrals are 
immediately under the pectorals; they are large, 0°8 inch in length, con- 
sisting of ten or twelve rays, strong at the base, but divided to a filamentous 
condition at their extremities. 
A patch of scales is preserved on the antero-superior portion of the body; 
they are large, 0°15 inch in length and one-third that in breadth. The free 
posterior margin of the scales is slightly circular and minutely pectinated. 
This species may be distinguished from Beryx vexillifer by the oval form 
of its body, by the larger number of vertebrae, and the position of, and the 
number of rays constituting the fins. The position of the mouth in this species 
is lower than in B. vexillifer, and the jaws, especially the upper one, are 
consequently straighter and more symmetrical than those of the species last 
named. 
Formation and Locality.—Upper chalk: Hakel, Mount Lebanon. 
£zx coll.—Lewis Collection, Natural History Museum, South Kensington. 
Genus. Pseudoberyx. Picrer and Humserr. 
Pseudoberyx syriacus, Picter and Humperr. 
P. syriacus. P. and H., 1866. ‘Nouv. rech. s. 1. Poiss. foss.,” p. 33, pl. I1., 
figs. 4—6. 
Formation and Locality—Hard chalk: Hakel. 
Ex coll_—Museum, Geneva (type), not rare. 
TRANS. ROY. DUB. SOC.) N.S. VOL, IIL. 4A 
