ON NORTH AMERICAN ZOOLOGY. 



221 



Onl. CHONDROPTERYGII ELEUTHEROPOMI. 



Fam. Sturionidk^. 



Acipeiiser transmontanus, F.B.J. 97./. 2. 



Colnmb. R. 

 „ nipertiauus, F.B.J. 97, 1. Sas- 



katch. «.— 30° N.— 55° N. 

 „ brevirostris, Le Sueur, Jm. 



Phil. Tr. N.S. Delaware R. 

 „ maculosus, Id. Ohio. 

 „ oxyi-hynchus, Mitch. Delaw. N. 



York. 



Acipenserrubicundus,LE Sueur, /. c. 12. 

 Canada lakes. 



„ platyrhynchus, Raf. Ohio. 



„ serotinus, Id. Ohio. 



„ ohienm. Id. Ohio. 



„ macrostomus, Id. Ohio. 

 Platirostra edenlula, Le Sueur. Ohio. 

 Polyodon folium, Lac. 13, Z.Ohio, Mississ. 



Fam. Chim^roide/e. 



Chiraaera CoUaei, Bann. N. Pacif. I Elephant fish, YAVCOvvEn. Straits of Da 



I Ftica. 



SturionidecE. — The western European waters produce only one 

 species of this family, but several exist abundantly in the Da- 

 nube and other rivers flowing into the Black Sea, and also in the 

 rivers of Northern Asia. The species are still more numerous and 

 various in Noi*th America and the Mississippi, and its tributaries 

 nourish some curious forms found nowhere else. We are chiefly 

 indebted to M. Le Sueur for our knowledge of the sturgeons of 

 the United States, but a monograph of the family is much 

 needed, the species both of the Old and New Worlds are as yet 

 but badly determined. 



CMmoBroidecB. — Only two species of this family have been figu- 

 red, viz. , the chimoera monstrosa, an inhabitant of the North Atlan- 

 tic, and the callorhynchiis antarcticus frequenting the southern 

 parts of the Atlantic and Pacific. On Captain Beechey's voyage at 

 least two others were discovered, one on the coast of Chili, and 

 another, named by Mr. Bennett chimccra CoUicci, in the Bay of 

 Monterey. Vancouver took one in the Straits of Juan daFuca, 

 but he has given no description of it whatever whereby we may 

 judge of the species. 



Ord. CHONDROPTERYGII TREMATOPNEONTES, 



(Placoidei, Agassiz.) 



Fam. SELACHIIDEiE. 



Scyllium Edwardsii, Cuv., Edw. 289. 



„ canis, Mitch. N. York. 



„ canicula, Smith. Mass. 



„ caiulus. Id. Mass. 

 Carcharias ol)sciirus, Le Sueur, Jc. Sc. 

 Ph. 9. 



Carcharias Uttoralis, Le Sueur, N. York. 



Mass. 

 „ terrsenovK, F. B. A. 3, 289. 



New/. 

 „ vulgaris, Belon, 60. N. York. 



Mass. Penn. Mit. Sm. 

 „ vulpes, Sm. Mass. N. York. 

 „ glaucus, Mitch. A''. York. Mass. 



