14 



University of California Publications. 



[Geology 



Approaching Cynodictis (?) oregonensis rather closely, as it 

 does, this form makes a separation of the John Day Cynodictis 

 type from the more specialized Nothocyon very difficult, if it is 

 really possible. 



MEASUREMENTS. 



mm. 



Length, premaxillary to inion 104 



Length, postorbital process of frontal to inion 54 



Length of superior dental series 50 



P 3 , antero-posterior diameter 6.2 



P*, antero-posterior diameter 9 



P*, transverse diameter across deuterocone 5.2 



M l , antero-posterior diameter 7.4 



M 1 , transverse diameter 9.2 



M 2 , anteroposterior diameter 4.6 



M 2 , transverse diameter 7.2 



Long diameter of otic bulla 19 



Width between otic bullae 7 



Elevation of inion above foramen magnum 16 



Width between canines 12.5 



Length of superior dental series including canine 44 



NOTHOCYON LEMUR Cope. 

 PI. 2, Figs. 2, 3, 6, 7, and 8. 



Galecynus lemur Cope, Bull. U. S. Geol. Surv., v. 6, p. 181, and Tertiary 

 Vertebrata, p. 931. 



Cynodictis lemur (Scott), Trans. Amer. Phil. Soc, 1898, p. 400. 



Nothocyon lemur (Wortman and Matthew), Bull. Am. Mus. Nat. Hist., v. 

 12, p. 127. 



This species is represented by two crania, by several upper 

 jaws with well-preserved teeth, and by a number of loose molars. 

 Several lower sectorials and jaws discussed under the next species 

 possibly belong here also. Although no mandibles have as yet 

 been found in association with crania, there seems to be some 

 reason for believing that the inferior dentition of lemur is much 

 like that of latidens, as is indicated in the discussion of latidens 

 following. 



The following measurements of upper teeth of several indi- 

 viduals of the lemur type show considerable variation, but all 

 point toward this species rather than latidens. 



