4 
Nasua. The round head of the radius indicates a complete power of 
supination of the fore foot, and is different in form from that of Carnivora 
including Nasua,; and finally, the distal end of the radius is still more 
different from.that of Vasua, and resembles closely that of Semnopithecus. 
We have, then, an animal with a long thigh free from the body, a foot 
capable of complete pronation and supination, and a form of lower jaw 
and teeth quite similar to that of the lower monkeys. The form of the 
humerus and its relative length to the femur are quite as marked as in some 
of the lemurs. The most marked difference is seen in the increased num- 
ber of teeth ; but in this point it relates itself to thelother Quadrumana, 
as the most ancient types of Carnivora and Ungulates do to the more 
modern ; ¢.g., Hyenodon to the former and Paleosyops to the latter. In 
its special dental characters it shows a close resemblance to small types of 
the Eocene, which have been regarded as low Perissodactyles, as Hyo- 
psodus, ete. 
TOMITHERIUM ROSTRATUM. Cope. 
Proceedings of the American Philosophical Society, 1872, p. 470. 
This species was about the size of the prehensile tailed-monkey, so 
frequently seen in shows. The first and second premolar have but one 
root, the base of the second being about the size of the base of the canine. 
The latter are cylindric at base. The incisors form a parabolic outline, 
and have entire edges, the middle pair transverse ones. Enamel gener- 
ally smooth, premolars somewhat striate ; an indistinct inner cingulum. 
M. 
Length of entire dental series (straight).............. 0.044 
“« symphysis mandibuli.................0..-04. .020 
Depth ramus at second molar.............0.....0.005 .010 
Length crown of “ BE tied a 5k aeudadhqu ged desde 006 
Width ss a SaaS Ma Qa nne tae tnd 0045 
“* between two ‘ SY spatiale Bea tad ana Me tla Banas 014 
es #8 CANINES dicainnnwig sy seinen baemeaw peek 005 
“« of ascending ramus above dent. foramen...... .016 
Length of humerus.............0 00... c cece eee eee -083 
Diameter of heades. gia secede crates cc e eeb anes 013 
Diameter of shaft at middle....................000.. 0.0085 
ee “« distal end, transverse................... 023 
es ag fe antero-posterior .............. -0078 
Depth of olecranon......... 0.0... eee ee eee 009 
«ulna at coronoid ..... 6.2.2... eee eee ee - .010 
Diameter extremity of radius, proximally............ .009 
6 He os distally.............. . .010 
Length of ilium from acetabulum................... 042 
Width near crest ......... 0... cece cee ene .017 
