A History of the Fishes of Massachusetts. 



By DAVID HUMPKREYS STOEEE, M. D., A. A. S. 



Continued from Vol. viiL p. 434. 



ORDER IL 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. SQUALIDJB. 



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

 ings on each side, never underneath. 



GEKUS I. CAECHARIAS. Cut. 



One anal and two dorsal fins ; the first dorsal placed over the space between the pec- 

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

 serrated 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 Gfray Shark 

 (Plate XXXVL Fia 1.) 



Carchanas gi musy Atees, Bost Joum. Nat. Hist , iv. p. 29S, pi. 12, fig. 4. 

 ** " Stoebr, Synopsis 



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

 er ; beneath white, 

 VOL. IX. 31 (21^7) 



