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Article XVIII. NOTES ON AMERICAN DEER OF THE GENUS 
MAZAMA. 
By J. A. ALLEN. 
CONTENTS. 
PAGE. 
Distribution . ae ; pete Baa. 
Nomenclature ; ; ; R ; Oe 
General considerations . ; ; ple ae Pi eeee ; ate ty. 
Coloration ‘ ; : : eS 
Pelage . ; ; ; ; : : , ‘ e020 
Antlers. pea ae ; ‘ ; , ; ; ene ef 
Teeth ; 4 ; sn wrae : : So SE 
Skull ; ; : : ‘ ; ; ee 
List of species and subspecies with type localities. See ; o  BaO 
Genus Mazama : ; : : i ; gs ee 
Systematic review : : : coe 
During recent years the collection of South American deer of the genus 
Mazama in the American Museum of Natural History has been increased 
by important accessions from many and widely separated localities, the 
number of specimens referable to this genus now numbering about 65. 
They represent localities in Nicaragua, Costa Rica, Panama, Colombia, 
Venezuela, Trinidad, Guiana, Ecuador, Matto Grosso, and Paraguay. In 
identifying this material it was necessary to make a careful study of the 
group as a whole, the results of which investigation are recorded in the 
present paper, which incidentally includes descriptions of a number of new 
forms. This material is of course wholly inadequate for a satisfactory 
revision of the group, but is sufficient to indicate the existence of a much 
larger number of forms than has hitherto been recognized. 
I am indebted to Mr. E. W. Nelson, of the Biological Survey, for the 
loan of skulls of the Mexican species, and to Mr. W. H. Osgood, of the Field 
Museum of Natural History for a skull of his Venezuelan species, for exami- 
nation in the present connection. 
DISTRIBUTION. 
The distribution of the genus Mazama includes, as is well known, nearly 
all of tropical and subtropical America, from the State of Vera Cruz in 
Mexico to Paraguay, the altitudinal range extending from sea-level to 16,000 
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