X. 



A History of the Fishes of Massachusetts. 



By DAVID HUMPHREYS STORER, It D., A. A S. 



Continued from Vol. viii. p. 434. 



ORDER II. PLAGIOSTOMI. 



Gills fixed by their external edges, with five small external openings on each side. 

 No opercle. Jaws represented by the palatine and postmandibulary bones, which alone 

 are armed with teeth. Pectorals and ventrals always present, — the latter, in the male, 

 furnished on their internal margins with long appendages. 



FAMILY XXVIII. SQUALIDiE. 



Body elongated, cylindrical. Tail thick and muscular. Eyes lateral. Branchial open- 

 ings on each side, never underneath. 



GENUS I. CAKCHARIAS. Cuv. 



One anal and two dorsal fins ; the first dorsal placed over the space between the pe< 

 toral and abdominal fins. Jaws and head depressed. Teeth flat, pointed, and cutting ; 

 -errated in the upper jaw, sometimes in both jaws. No temporal orifices in adults, but 

 rudiments may be observed in the foetus of some of the species. 



Cabcharias griseus, Ayres 



The Gray Shark 



.(Plate XXXVI. Fig. 1.) 



Carcliarias griseus, Ayres, Bost. Journ. Nat. Hist., It. p. 293, pi. 12, fig. 4. 



« 



" Storer, Synopsis. 



Color. The anterior and upper parts of the body are of a dark ash color ; sides light- 



er ; beneath white. 

 vol. ix. 31 



(217) 



