[7 J CATALOGUE OF THE FISHES OF NORTH AMERICA. 



26. Oaleus canis Mitchill. N. Eu. (19) 



$ Pleuracromylon Gill. 



27. Galeus califomicus Gill. C. 



19.— TRIACIS Miiller & Henle. (15) 

 § Triads. 



28. Triacia semifasciatus Girard. C. (21) 



$ Rhinotriacia Gill. 



29. Triacia henlei Gill. C. (22) 



20.— GALEORHINUS Blainville. (16) 



30. Galeorhlnns zyopterus Jordan & Gilbert. C. (23) 



21.— GALEOCERDO MuUer & Henle. (17) 



31. Galeocerdo maculatus' Ranzani. W. P. (24) 



22.— CARCHARHINUS 2 Blainville. (18, 19, 20, 21) 

 $ Carcluirimu. 



32. Carcharhinus glaucua Linnaeus. C. O. Eu. (25) 



$ Eulaviia GiU. 



33. Carcharhinus obscurus Le Sueur. N. (26) 



34. Carcharhinus aethalorus^ Jordan & Gilbert. P. 



35. Carcharhinus fronto'' Jordan & Gilbert. P. 



36. Carcharhinus platyodon Poey. W. S. (266.) 



1 Galeiis maculatus Ranzani, De Novis Speciebus Piscium, Dissert. Prima, 1838j 7; 

 Galeocerdo maculatus, Poey, Ennmeratio Pise. Cubens., 201, 1875. This name has pri- 

 ority over G. tigrinus Miiller & Henle. 



2 Although Carcharias glaucus was probably the species in mind when Rafinesque 

 proposed his genus Carcharias, he makes no reference to this species. The only species 

 actually mentioned by him in connection with the original account of his genus 

 Carcharias is Odontaspis taurus. The name Carcharias, if used at all, should supersede 

 Odoniaspis. This is the view at first taken by us in the Synopsis Fish. N. A., but after- 

 wards, in the Addenrlum, p. 872, changed to follow current usage. 



The oldest tenable name of this group is that of Carcharhinus Blainville. I think 

 it best to regard Eulamia, Aprionodon, Hypoprion, and Scoliodon as subgenera under 

 Carcharhinus, rather than as distinct genera. 



^Carcharias asthalorus Jordan & Gilbert, Proc. U. S. Nat. Mus., 1882, 104; Mazat- 

 lan : Panama. 



^Carcharias fronto Jordan & Gilbert, Proc. U. S. Nat. Mus., 1882, 102. Mazatlan. 



