56 ZOOLOGY. 



Genus UROCYON, Baird. 



UROCYON OINEREO-ARGENTATUS, (Scbreb.) Coues. 



Gray Fox. 



Cray Fox, Oatesb., Car., ii, 1731, 78, pi. 78.— Penn., Syu. Quad., 177C, 157.— Id., 

 Hist. Quail.. 1781, No. 160.— Id., Arct. Zool., i, 1784, 48. 



Cants cinerco-argentatus, Schreber, Saug., iii, 1778, 300, pi. 92 (bas actual priority 

 over Erxleben). — Eexl., Syst. Ad., 1777, 576.— Gm., Syst, Nat,, i, 17S8, 

 74.— SHAW, Geu. Zool., i, 1800, 324.— Desm., Mamm., i, 1820, 204 {par- 

 tlm).— Harlan, Fu. Amer., 1825, 90. — Grief., An. Kingd., v, 1827, 148.— 

 Godman, Am. Nat. Hist., i, 1831, 280.— Fr. Guv., Snppl. Buff'., i, 1831, 

 1S7.— Doughty's Cab. Nat, Hist,, ii, 1832, 145, pi. 14.— Wagn., Suppl. 

 Schreber, ii, 1841, 430 (partly). — Woodh., Sitgreave's Rep. Expl. Zuiii ami 

 Colorado, 1854, 40. 



Canis mrginianus, Schreb., Siiug., iii, 1778, 301, pi. 92. — Erxl., Syst, An., 1777, 

 507.— Gm., Syst, Nat,, i, 17SS, 74.— SnAW, Geu. Zool., i, 1800, 325.— 

 Harlan, Fu. Amer., 1825, 89. — Griff., Auim. Kingd., v, 1827, 150. — Rich., 

 F. Bor.-Atner., i, 1S29, 90 (Vulpes). 



Vulpes mrginianus, DeKay, N. Y. Fu., i, 1S42, 45, pi. 7, f. 2.— Aud. & Bach., Quad. 

 N. A., i, 1S49, 102, pi. 21. 



Vulpes (Uroeyon) virginianus, Bd., Mamm. N. A., 1S57, 138. 



Canis griseus, Bodd., Blench. Auim., i, 1784, 97 (ex Peuu). 



The cranial characters of Urocyon, as compared with Vulpes, are very 

 remarkable, fully warranting- generic distinction, if not, indeed, of still 

 higher -taxonomic value. The differences are much greater than those sub- 

 sisting between Vulpes and Canis. These were first pointed out in 1857, by 

 Professor Baird, in the work above cited, p. 121. The principal characters 

 are as follows ; in addition to those of cranium, there is a very curious con- 

 dition of pelage on the tail; in consideration of which the name of "Mane- 

 tailed Foxes 1 ' was applied to the group, which contains, besides the present 

 species, the U. littoralis. 



Vulpes proper. — Temporal crests approximate, nearly parallel, and 

 single, as far as the coronal suture. No supplementary tubercle on lower 

 sectorial tooth. Tail uniformly haired. Muzzle comparatively long. Angle 

 of jaw ordinary, and skull, in general, thoroughly canine. 



Urocyon, Baird. — Temporal crests divaricate, oblique, widely separated 

 at coronal suture. A supplementary tubercle on lower sectorial tooth. 



