452 THE AMERICAN NATURALIST. [ VoL. XXXV. 
bones for a space of about 3 mm. ; while No. 8622, also ¢, topo- 
type, resembles the northern Virginia deer in that this arm of 
the maxillary separates the nasal and premaxillary bones by a 
larger space, in this case 15.5 mm. The lower molar row is long, 
being even a trifle longer than in O. borealis, though the jaw of 
the latter slightly exceeds that of O. Jouzszame in length. In 
all the specimens examined the ramus of the jaw shows a slight 
concavity in ventral outline between the molar region and the 
tip resembling in this respect O. osceo/a and differing from 
RO DIRECTIS e E di adu 
gini la (B gs), $, No. 2391, Coll. E. A. and 
O. Bangs, Mus. Comp. Zoól. 
Skull af O4. 
Fic. 2. 
O. borealis, in which the ventral outline of the jaw is quoe 
nearly straight. Following are some measurements in milli- 
meters of the skull of the type of O. Jouisiane, and by Way 
of comparison the corresponding measurements of the type of 
O. borealis (No. 4999, 8, Bangs collection), the race most resem- 
bling it in size, are given in parenthesis after each. (Unfor- 
tunately, the occipital region has been sawed off from the 
Louisiana skulls by the collector, but there seems to be no 
appreciable difference in length between them and northern 
Virginia deer skulls.) Zygomatic breadth, 115 (139) ; least 
inter-orbital breadth, 69 (80.5); greatest length of n 
