6^-1 



Mr. O. Thomas on 



Lund's types, I do not tliiiik to be the case), it is certain that 

 they are congeneric, and therefore tlie name of Lycalopex 

 should stand for the group, antedating Eunothocyon by many 

 years. 



Next comes Pseudahpex, Burmeister (1856), contammg 

 Canis azarce, Wied, of Burmeister (really the Agouarachay), 

 C. gn'seus, and G. mof/ell(inicus, all congeneric, the name 

 being therefore valid for the group. 



It is to be noted that this interpretation of Lycalopex and 

 Fseiulalopex is exactly as in Gray's ' Catalogue* of 1869. 



Going back now to Ctrdocyon^ Ham. ISmith, we tind that 

 of the two co-genotypes selected by Dr. Allen, azarce, Wied, 

 and magellanicus, Gray, the latter lias been removed by 

 Burmeister into Paeudalopex^ leaving the tirst and most 

 natural one, azarce, Wied, as the genotype of Cerdocyon. 

 This name will therefore stand for the Crabeaters, instead of 

 Dr. Allen's Cnrcinocyon. 



As a result, we L;et the following names for tiie different 

 groups of 8. -American (janidie : — 



Chrysocyon. . . . jubatus gronY>. Monntypic. 



Dusicyon .... iintitrctwus group. Type, antarcticus. 



Cerdocyon .... //<o*m group. Type,6/v/siV?e«s2s(syn.a;:rtr«, Wied). 



Pseudalopex . . Afroiuirachay group. Type, itiayelltmicus. 



Lycalopex .... vetulus group. Type, cetiilus. 



Speothos liusb-dogs. Type, venuticus. 



Dusicyon darwini, sp. n. 



The extinct dog of East Falkland Island. Larger and 

 (it is said) darker coloured than D. antarcticus, that of the 

 Western Island. 



Size, as judged by skull, decidedly larger than in antarc- 

 ticus. General colour of the now faded type rather darker 

 than in a skin of antarcticus, the hairs of the back, where 

 ])erfcct, with broader black ends tiian in the allied specie.^. 

 According to the account quoted below from Darwin, the 

 colour is less red tiian in tiiat ani-nal, a difference now but 

 doubtfully perceptible on the available skins. 



iSkull distinctly larger throughout than in antarcticus. 

 Inlerorbital region flatter, the Irontals less prominently in- 

 flated on eacli side of the middle line. Muzzle maikcdly 

 broader. 



liind foot of type (c.) 175 mm. 



