374 ROY L. MOODIE 
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Fig. 9 Undetermined felid, possibly Hoplophoneus, a machairodont of the 
Lower and Middle Oligocene. White River beds of South Dakota, a large con- 
temporary of Dinictis. The olfactory region is broken away. The entire cast 
has a length of 73 mm. and displaces 50 cc. of water. 
Fig. 10 Left lateral view of same endocranial cast, showing relation of cere- 
brum to cerebellum, the course of the sulci and the cast of the precondyloid 
foramen, running along the medulla. 
Fig. 11 Base of same endocranial cast, showing position of cranial nerves as 
indicated by the casts of the cranial foramina transmitting those nerves. I have 
regarded these casts as nerves and they are so labeled. N. opt. indicates the 
position of the optic nerve, but is in reality the cast of the foramen opticum. 
Similarly, N. oph. = foramen orbitale; N. max. = foramen rotundum, and 
N. man. = foramen ovale. 
Fig. 12 Dorsal view of the endocranial cast of Daphaenus felinus Leidy, 
a bear-dog from the Lower Oligocene beds of South Dakota. The cast was 
somewhat weathered, but the sulci are still evident. The ventral surface is 
entirely eroded. Length of entire endocranial cast, 74 mm. 
