434 APPENDIX. 



location of several American species, which truly belong to the 

 Arvicola, Cuv. or Hypud^us of Illiger. 



Add, of American species, Hypudeeus xanthognatus, Leachj Hi/P' 

 riparius? Ord. A subdivision of this group will embrace the Hyp. 

 hispidus (Sigmodon, Say), and Hyp. messor, L. C: and another sub- 

 division. Hyp. floridanus (Neotoma, Say), and Hyp. gossipinus, L. C. 



XI. 



Here should come the new genus Psammomys, Le Conte, described 

 Ann. Lye. Nat. Hist, of New York, HI, 3, pi. 2, which differs from 

 all the preceding in,the form of the jaw teeth. The eyes are very 

 small, and the ears scarcely visible. It burrows like the Sorex. 



But one species has yet Been found P. pinetorum, L. C. which 

 inhabits the pine forests of Georgia. Its hair is a dark shining 

 cinereous colour, tipped above with brown, beneath a very pale ashj 

 head large and blunt; tail round and hairy.(l) 



XII. 



Caihartes aura. (Turkey Buzzard.) Black, with a bluish gloss; 

 neck feathered equally all round; head red, bill white. The other 

 species Caihartes iota, Vieill. which by our author is arranged in 

 the genus Percnopterus, undoubtedly belongs to the same genus with 

 the C. aura. Its vulgar name is the Carrion Crow. Its colour is 

 black, neck more feathered above than beneath; head black; bill 

 horn-colour. Both these species are' common in the warm parts of 

 our country: the first, however, ranges more to the north than the 

 other; it is sometimes seen at New York. They prey upon carrion 

 and excrementitious matters, but never attack living animals except 

 they perceive them helpless or unable to defend themselves. 



XIII. 

 These citations, from F. pemisylvanicus, Wils. to F. hyemalis^ Wils. 



(1) On examining the work of Ruppel lately received at the Ac. of Nat. Sc. of 

 Philad., I find that he has anticipated Major Le Conte in the generic use of the 

 word Psammomys. As the rule of priority should be inexorably adhered to in these 

 cases, 1 would propose for the American animal the generic appellation of Pitt- 

 MYs, oi- Pine-mouse. 



