16 APPENDIX. 



Page 291. 

 GENUS HYSTRIX. 



"Braijlian Porcupine Hystrix prehensilis." } __ s vnetheres ^ehensilis 

 "Mexican Porcupine Hystrix Mexicana." } ~* y ' 

 (Linn.) Cuv. 



" Canadk Porcupine Hystrix dorsata."=Erethizon dorsatus (Linn.) Cuv. 



Page 292. 

 GENUS MUS. 



"American Rat Mus Americanus." This is undoubtedly the "American 

 Rat" of Turton, whose description is a virtual quotation of the diagnosis 

 of the "American Rat" of Pennant, (No. 229., Hist. Quad. 1781,441.), who 

 quotes Bartram, referring to Kalm's Travels (ii, 48). 



Bartram's references, as quoted, apply to the Cave Rat of the Alle- 

 ghany Mountains, the extinct (?) Neotoma magister of Baird, (Mam. N. 

 Am., 1857, 498, (in text)), which, as N. pcnnsylvanica, Stone, (Proc. Acad. 

 Nat. Sci., Phila., (1893, 16,) has been described as a recent species. This 

 animal, which is distinct from N. floridana Ord, would be entitled to 

 the name americanus imposed by Turton (q. v.) were not that name 

 preoccupied by the "Mus americanus" of Kerr (Syst. Nat., 1792, 231.) 

 which is now accepted as the first tenable name of the eastern White- 

 footed Mouse, Siloinys americanus. Some earlier authors have con- 

 founded the two in their synonymy. 



"Water Rat Mus amphibius." The Arvicola pennsylvanicc(Qr<\\(\\& infra) 

 was identified by Turton and his predecessors with the large Water Vole of 

 Europe. See Lawson's History of Carolina, page 122. 



"SAND OR EARTH RAT MUS TUZA." Prof. Baird's quotation of this 

 name is incorrectly spelled tuzu in his work on N. American Mammals. 

 Dr. Coues has rightly insisted on the adoption of Ord's specific name for 

 the Georgian Hamster or Salamander of the Gulf States, which has 

 generally gone under the name Geomys pinetis of Rafinesque, (Amer. 

 Month. Mag., 1817, 45.). Both names are probably based on the same 

 descriptions, notably those of Mitchill, (N. YorkMed. Repos. , 1802,) 89 

 Ib., Bewick's Quad., ist. Amer. ed., 1804, 525). 



"Louisiana Earth Rat or Gopher Mus Ludovicianus." Ord's foot-note 

 reference to this animal leaves us in doubt whether he referred to the 

 common Pocket Gopher, Geomys bursarius (Shaw), (Linn. Trans., v. , 1800, 

 237) or not. It is probable that he did. Shaw's name in any case, has 

 priority. 



"ASH-COLOURED RAT MUS CINEREUS."=Neotoma (cinerea.} Say & 

 Ord, Jour. A. N. Sci., Phila., 1825, 346. Another of Ord's species, for 

 the honor of naming which he acknowledges his indebtedness to the 

 painstaking narrative of Lewis and Clark. The N. drummondii (Rich.) 



