100 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



4 4a 



Figs. 4-8.— Lower fourth premolars and carnassials of Canids. All natural size. 4, 4a, 



Canis occidentalis.cat. no. 1006,u.s.n.m. 5,5a, Cants armbrusteri.cat. no.7482, u.s.n.m. 6,6a, 



Cants (lysciscus) latrans, cat. no. 3618, u.s.n.m. 7, 7a, Cants aureus, cat. no. 181500, u.s.n.m. 



8,8a, VuLPES, CAT. NO. 7183, u.s.n.m. 



