No. 7.] NIMRAVID^ AND CANID^ OF THE MIOCENE PERIOD. 171 



The following list shows the number and distribution of the species 

 of the Nimravidce. The position of a cross on a line indicates an inter- 

 mediate geological position. 



DESCRIPTIONS OF NEW SPECIES. 



NiMRAVUS GrOMPHODUS Sp. nOV. 



Nimravm hracliyops Cope, Proceed. Academy Philad. 1879, p. 170, not MachcBrodu» 

 brachyops Cope, Proc. Am. Phil. Soc. 1878, p. 72. 



This carnivore is represented by parts of three individuals ; one of 

 them by a nearly complete skull. The species is rather larger than the 

 average Uncia concolor. 



Measurements of sTcull. 



M. 



Axial length from occipital condyles to premaxillary border 206 



Axial length from Laion to premaxillary border 220 



Axial length from premaxillary border to canine tooth 017 



Axial length from premaxillary border to anterior border of superior sectorial.. . 066 

 Axial length from premaxillary border to posterior extremity of maxillary bone . . 097 



Axial length from premaxillary border to postglenoid process 162 



Length of nasal bone from nasal notch 065 



Length of sagittal crest from inion 082 



Width of premaxillary bone (greatest) 019 



Width of each nasal bone at middle 008- 



Width of each frontal bone at middle of orbit 028 



Width of each frontal bone at postfrontal angles 035 



Width of skull at anterior part of zygoma 098 



AVidth of zygomata at temporal fossa Ill 



Width of skull at meatus auditorius 074 



Width of skiill between apices of paroccipital processes 054 



Width of occiput at middle 044 



Width of foramen magnum 024 



