Davis—On the Fossil Fishes of the Chalk of Mount Lebanon. 545 
They were situated 0:1 of an inch in advance of the middle of body, not including 
the tail. 
The scales are small, thin, apparently smooth and without marginal serration 
their outline is not distinguishable, except in small portions, and the number of 
scales cannot be identified, 
Though I have had no opportunity of seeing the type specimen described by 
Prof. Costa, this one appears to be the same species. It is very rare, and the 
difficulty of becoming acquainted with the original type has led me to redescribe 
and figure this specimen. 
Formation and Locality—Upper Cretaceous: Sahel Alma, Mount Lebanon. 
Ex coll.—Lewis Collection, Robert Damon, Esq., Weymouth. 
Order I[V.—Puysosromt. 
‘‘ All the fin-rays articulated, only the first of the dorsal and pectoral fins is 
sometimes ossified. Ventral fins, if present, abdominal, without spine. Air-bladder, 
if present, with a pneumatic duct (except in Scombresocide).” (Giinther.) 
Dr. Giinther includes in this order the great families of the Siluroids, the 
Cyprinoids, the Salmoids, and the Clupeoids. The two latter families were 
comprised by Prof. Agassiz in the Halecoidei; they are largely represented in 
the fossil fish remains of both the Hard and Soft Chalk of Lebanon. The 
Siluroids appear to be represented by the single genus Coccodus, and Istieus is 
the single representative of the Esocide. 
Family. SILURIDZ. 
Genus. Coccodus. 
M. Pictet described a peculiar genus of fossil fishes with the above name 
(“‘ Description d. quelques poiss. foss. du M. Liban.,” 1850, p. 51, pl. 1x., fig. 9) 
from Hakel. The specimens present anomalous features, and it is difficult to 
determine their precise relationship with either the Ganoids or Teleosteans. Its 
skeleton is described as possessing rather a fibrous than a bony consistence; the 
vertebrae have been displaced, and the ribs and apophyses present a compressed 
and somewhat irregular appearance; large bony spines are attached to the 
pectoral arch, and appear to have supported the fins; whilst the massive form 
of the arch recalls that of some of the rays. One of the principal characters 
consists in the dentition of the mouth; four regular rows of teeth cover the 
palate similarly to those of the Pycnodonts. In the lower jaw the teeth are 
similar, but smaller. 
