CEKVID^ 155 



with the exception of the pudus, in a single genus, while 

 others, like Gray, adopt several generic divisions. The 

 former course has hitherto been followed by the present 

 writer, but now^ tliat Hippocamclns is generally adopted for 

 the guemals, this involves the use of that highly objection- 

 able term, as being the earliest, for the wdiole group, a course 

 he is not prepared to follow. Under these circumstances, 

 the group is split up into six genera. 



The range of the present genus,* which is typified by an 

 upper premolar tooth from a cavern-deposit descriLied as 

 0. spclxKS, extends from Alaska to Peru, Bolivia, and northern 

 Brazil. 



The species here recognised are distinguishalde as 

 follows : — 



A. Metatarsal gland (wheu present) small and circu- 



lar ; tail long ; ears moderate O. Virginia nns. 



B. Metatarsal gland elongated ; tail shorter ; ears 



very large. 



a. Metatarsal gland very long ; tail small, 



black at tip all round 0. hemionus. 



b. Metatarsal gland shorter ; tail larger, black 



above, white below 0. cohtDibvantfi. 



I. ODOCOILEUS VIEGIXIANUS. 



" Cervus dama americanus," Erxleben, Syst. liegn. Anim. p. 312, 

 1777; not a technical name, teste Allen, Anier. Nat. vol. xxxiv, 

 p. 318, 1900, Osgood, Proc. Biol. Soc. Wasldngton, vol. xv, p. 87, 

 1902, and Field Mas. Zool. Pub. vol. x, p. 48, 1912, and Thomas, 

 Ann. Mag. Nat. Hist. ser. 8, vol. xi, p. 585, 1913. 



Cervus virginianus, Boddaert, Elcnchiis Anim. vol. i, p. 136, 1785; 

 Baird, Mamni. N. America, p. 649, 1857 ; H. Smith, Griffith's 

 Animal Kingdom, vol. iv, p. 127, 1827 ; Caton, Antelojye and 

 Deer of America, p. 100, 1877. 



Cervus clavatus, H. Smith, Griffitli's Animal Kingdom, \ol. iv, p. 132, 

 1827 ; Sundevall, K. Svenska Vet.-Ak. Handl. 1844, p. 183, 1846. 



Cervus (Mazama) virginianus, H. Smith, Griffith's Animal Kingdom, 

 vol. V, p. 315, 1827. 



Cervus (Mazama) clavatus, H. Smith, loc. cit. 1827. 



Odocoileus spelseus, Bafinesque, Atlantic Journ. vol. 1, p. 109, 1832. 



Dorcelaphus virginianus, Gloger, Handbuch Naturgesch. p. 140, 1841. 



Mazama virginiana, Jardine, Naturalist's Libr., Mamm. vol. iii, p. 176, 

 1835. 



* As the name Odocoileus is etymologically bad, emendations 

 have been proposed, and objections raised to its use in every form. 



