116 
CREODONTA. 
Stypolophus multicuspis, Cope. 
Plate xsxix, figs. 12-14. 
Prototomiis multicuspis, Cope, System. Cat. Vert. Eocene New Mexico, U. S. Geog. Survs. 
W. of 100th M., 1875, p. 10. 
Established on a series of superior molars, which accord so closely 
with two series of inferior molars as to leave no room for doubt that they 
jiertain to the same species. One of the latter specimens includes the 
greater part of the right ramus of the mandible; the other the principal 
part of both rami. 
The superior molars are twice the size of those of S. viverrinus, and 
have much the same structure. The last or transverse molar has less 
extend, and is inserted by one root only; the penultimate molar is wider 
than long; the antepenultimate longer than wide. There is a short blade 
in front of the double cone in the penultimate, but none in front of the 
corresponding cones in the two molars which precede. The cingulum of 
the inner base is very obscure. 
In the true inferior molars, the three anterior cusps are much elevated 
above the heel. The latter is quite elongate on all of these teeth, and 
forms a cutting-blade on the last premolar and anterior two molars; the 
second and third premolars support a low, trenchant, posterior heel. No 
external cingulum ; enamel smooth. Rami of the mandible slender. 
Measurements. 
Length of the posterior four molars. 
Length of the penultimate molar. 
Width of the same. 
Width of the antepenultimate molar. 
Width of the first molar. 
Length of the same. 
Elevation of the same. 
Length of the last six inferior molars. 
Length of three true molars.. 
Length of the last true molar. 
Elevation of the same. 
Length of the second true molar. 
Elevation of the third premolar. 
Depth of the ramus at the penultimate molar_ 
About the size of the Red Fox. 
M. 
0. 0270 
0. 0070 
0. 0090 
0. 0070 
0. coco 
0. 0075 
0. 0050 
0. 0450 
0. 0235 
0. 0090 
0.0070 
0. 0075 
0.0035 
0. 0015 
