1. DIDELPHrS, 



327 



Hah. America, from the United States to Chili and South Brazil. 

 Type not in existence. 



This widely spread species, owing to its remarkable variability in 

 colour, has been made the basis of a very considerable number of 

 nominal species, of which the most commonly recognized are the 

 North-American " D. virginiana," the Brazilian " D. cancrivora" and 

 the striped-faced variety D. azarce. I find, however, such a consider- 

 able amount of variability in the specimens from every locality, and 

 such an entire absence of constancy in any character or set of cha- 

 racters, that I am constrained to unite the whole of this group of 

 Opossums into a single species, to which the Linnean name of 

 " Z>. marsupialis " is of course appUeable. The striped-faced form, 

 B. azarce, T leave, however, for the present as a recognizable geogra- 

 phical variety, although not worthy of specific separation. 



a. Ad. St., 5 , 



b. Imm. St. 

 Ad. sk. I , 

 Skull. \ o- 



d. Ad. sk., cJ. 



e. Yg. al., 5 . 

 /. Ad. sk. 



Ad. sks. 

 Skulls. 



3/82. 



ft. l^,^;.,f'U/8a 



g. Ad. skull. 



^•- \\ 

 lAc 

 ) Skull. 



l,m. Ad. & imm. ska., 5/85. 



n. Ad. sk. 



0, p. Ad. sks. 

 q. Ad. sk., (J. 

 r. Imm. sk. 



g,t. Yg. aJ.,8/86. 



Ad. sks, 



«'^-{ Skull 

 w. Yg. al. 



ks. I 



ofM. I 



X. Ad. al., c? . 

 y, z. Yg. al., ? . 

 , I Ad. St. I , 

 "•Skull. \° 

 ■,, \ Ad. st. I 

 " • ) Skull. ( 

 c'. Yg. sk. 

 (?. Ad. sk., cj . 



Florida. 



N. America. 

 Texas. 



E. Doubleday, Esq. 



[P.]. 

 Purchased. 

 Mr. Drummond [P.]. 



Texas. 



San Diego, S. Texas 



California. 



Purchased. 

 W. Taylor,Baq. [C.]. 

 Zool. Soc. 

 (Type oi D. breviceps, Benn.) 

 California. Zool. Soc. 



(Prom type of D. calif arnica, Benn.) 

 Presidio, Mazatlan. A. Ferrer [0.]. 



Teapa, Tabasco, S.E. 

 Mexico {H. H. 



Smith). 

 Cozumel I., Yucatan 



(J!^. Oaumer). 

 Vera Paz, Guatemala. 



Messrs. Salvin 

 Godman [P.]. 



Concordia, Medellin, 



Venezuela. 



Trinidad. 



Messrs. Salvin & 



Godman [P.]. 

 O. Salvin, Esq. [P. & 



0.]. 

 J. K. Salmon [0.]. 

 Purchased. 

 Dr. H. Denny [P. & 

 C.l. 



Annandale, I. of Grenada G. R. M. Murray, 

 ( Grenada JEcUpseUx- Esq. [P. & C.]. " 

 peditiori). 

 Better Hope, Demerara. Rev. W. Y. > Turner 



[CI 

 Better Hope, Demerara. Rev. W. Y. Turner 



Mr. Wic 



Santarem. 

 Moyobamba, Peru, 

 BrazU. 



Brazil. 



Brazil. 



Rio de Janeiro, 



/ickham [0.1. 

 HerrRoff[C.]. 

 Purchased. 



Purchased. 



Purchased. 

 Purchased. 



