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POPULAR OFFICIAL GUIDE. 



EEDUNCA ANTELOPE. 



ishes in size and in antlers, until in Mexico it becomes a 

 small and delicate creature, with very small and light antlers 

 bearing only two or three small tines. The next form has so 

 widely diverged from the original type that it is necessary 

 to accord it rank as a full species. 



The Sinaloa White-Tailed Deer, (Odocoileus sinaloae), is 

 still smaller and weaker than the preceding. Our pair of 

 specimens shown was obtained by Mr. and Mrs. C. William 

 Beebe, in the State of Guadalajara, Mexico, and are highly 

 interesting as a link near the lower terminus of the Odocoi- 

 leus chain. On a majority of the antlers of this species 

 there are no branches whatever, but simply a weak main 

 beam, curving over at the tip, and terminating in a rounded 

 point. 



It should be noted here that the White-Tailed Deer group, 

 (Odocoileus), is very well represented in South America by 

 O. wcigmanni of the Guianas. 



The Marsh Deer, (Blastoceros pahtdosus), of eastern 

 South America, is the largest South American deer. Our 

 first specimen was obtained in 1904. Its antlers are strong- 

 ly built but short, and in architecture resemble the antlers 

 of a Siamese species known as Schomburgk Deer, (Cervus 

 schomburgki) ; but the latter has on each beam three double 

 bifurcations, while the former has but two. The Marsh 

 Deer has very large, wide-spreading hoofs, which it would 



