Zoological Society. 225 



Deer, which has lately been obtained by him from Valparaiso, and 

 is a native of South America. It evidently belongs to the genus 

 Capreolus or Roebucks. 



I may observe that most of the groups into which the Deer have 

 been divided are strictly geographic divisions ; the only exception is 

 in the Stags, or the restricted genus Cervus, one species of which is 

 found in America. The following animal appears to be a similar ex- 

 ample in the genus Capreolus, which has hitherto been restricted 

 to species found in the Old World. 



In size it agrees with the specimens of the male Ahi or C. pygar- 

 gus from Siberia in the British Museum collection, being at least 

 three times as large as the usual European Roebucks ; but it differs 

 from that species in being much darker, in not having the white spot 

 which extends over the upper part of the sides of the haunches, and 

 in having the greater part of the front ot the chin and a spot on each 

 side of the upper lip white, instead of the lip and chin being nearly 

 black, as in that species. 



In all the characters above noted it agrees with the European Roe- 

 buck, as it also does in the greater stoutness of the legs and the 

 greater length of the face. Indeed I can see no difference between it 

 and the European Roebuck, except in th: j greater size, the greater 

 length of the quills, and their more distinct and broader subterminal 

 yellow bands, and in the hair on the inside of the ears being whiter ; 

 but in the latter character it also differs from C. pygargus. 



I think it may be distinguished by the provisional name of C. leu- 

 cotis. 



Sundevall observes of C. pygargus, " A priori (C. Europceus) non 

 minus differt quam omnes Cervi indici inter se ; hi igitur, non minus 

 quam ille, distinguendi, sed rectius forsan ut merae varietates ha- 

 bendi." — Pecora, 61. 



I have seen six specimens of the Ural species, and they were all 

 alike, and very distinct from any variety of the European Roebuck I 

 have seen, especially in the form of the head and the extension of the 

 white disk over the sides of the rump, forming a broad oblong white 

 spot ; while in the European species it is an erect longitudinal disk 

 only, occupying the back part of the haunches. 



The height at the shoulder of Lord Derby's specimen is 38 inches. 

 His Lordship's correspondent states, "It was brought to Valparaiso 

 by Don Benjamin Munoz, a Commodore in the Chilian Navy. The 

 animal was shot by one of the Chileno officers about twenty leagues 

 from Port Famine in the Straits of Magellan. The Indians assured 

 the officer that there was another similar kind of Deer there, but 

 quite white. He did not see any of them, but the other kind (C. leu- 

 cotis) did not seem uncommon." 



2. On the Genus Bradypus of Linnaeus. By John Edward 

 Gray, Esq., F.R.S. etc. 



Illiger, and afterwards F. Cuvier, divided the Linnteau genus Bra- 

 dypus into two, according to the number of the claws and the absence 

 or presence of the canine, and the form of the crown of the grinders. 



Ann. $ Mag. N. Hist. Ser. 2. Vol. v. 15 



