64 [Senate 



SUB-CLASS II. CARTILAGINOUS FISHES. 



ORDER I. ELEUTHEROPOML 



FAMILY I. STURIONID^. 



263 AciPENSER KUBicuNDUs, Lesu. Lake Sturgeon. 



264 AciPENSER BREviRosTRis, Lesu. Skort-Tiosed Sturgeon. 



265 AciPENSER oxYRHiNcus, Mitch. Sharp-nosed Sturgeon. . .Cabinet. 



— — Lake Ontario. Gebhard. 



ORDER II. PLAGIOSTOMI. 



FAMILY II. SQUALID^. 



266 Carcharias vulpes, Cuvier. Thresher Shark. 



267 Carcharias ceruleus, Dekay. Small Blue Shark. 



268 Carcharias obscurus, Dekay. Dusky Shark. 



269 Carcharias littoralis, Dekay. Ground Shark. 



270 Lamna punctata, Storer. Mackerel Porbeagle. 



271 Lamna caudata, Dekay. Long-tailed Porbeagle. 



272 MusTELUs CANis, Dekay. American Houndfish Cabinet. 



— — Coast of New- York. Gebhard. 



273 Selachus maximus, Dekay. Basking Shark. , 



274 Spinax acanthias ? Storer. Spinous Dogfish. 



275 ScYMNUS BREviPiNNA, Dekay. The Nurse. 



276 ZyguEna malleus, Val. Hammerhead Shark. 1 



277 Squatina dumerili, Lesu. American Angel-fish, 



278 Pristis antiquorum, Latham (Linn. Trans.). Common Sawfish. 



FAMILY III. RAIID^. 



279 Raia diaphanes, Mitch. Clear-rcosed Ray. 



280 Raia Americana, Dekay. Prickly Ray Cabinet. 



■ — — Coast of New- York. Gebhard. 



281 Raia ocellata, Mitch. Spotted Ray. 



282 Pastinaca maclura, Dekay. Broad Sting-ray. 



283 Rhinoptera quadriloba, Dekay, Coionose Ray. 



