ee ae ———— 
ae ee eee a. 
RIBS, AND SCALES OF CTENODUS. . 59 
ortion of the body i prasad obliquus in which the pair of 
nes are in situ. The coid was referred to by Messrs. 
Hancock and Atthey in thee paper on Ctenodus and Dipterus, 
but it was not figured. I - ie ree that Mr. Barkas has 
esrenamngs any account of i he ecimens in his 
binet. r. Atthey’s deqrbtion resembles the specimen in 
my possession I shall quote it. “ r general character is that 
of a flattened elongated bone, with one end a little expanded, 
arched sli a ttle t and gradually thinned out to a fine edg 
angular process at the narrow a been: The Liseeak are four 
inches and three- eighths, and the ainaltoat five-eighths of an inch 
in len The ace i on is a as it does not ae to 
the elenoid cave at the owed extremity oat is formed 
its capes eee been removed s wa a | close porn Sevag 
there is, however, not any sign of a suture in the coracoid of 
heya rtebral column of Ctenodus, ‘as I have mentioned in. 
Part V of f those papers, was probably cartilaginous, as no remains 
of them have been disinterred. 
Jugular plates, we may infer, for the same reason, were absent, 
The ribs of this fish are osseous, and are found in comparativ 
abundance both disassociated and associated with , head- 
s, &e..; Messrs. Atthey and Barkas having great numbers in 
bone 
their cabinets They have been figured by Mr. T. P. Barkas in this 
Atlas.” Mr. Atthey thus describes them: “They are well archeth 
towards the proximal extremity, which is considerably e 
central channel is quite small, the cylindrical w a 
ification of t is, in faet 
