1913] 



Merriam: A Camel from Rancho La Brea 



313 



toward the anterior end. Below the diastema the lower margin 

 is barely concave, in contrast with Auchenia, in which it is dis- 

 tinctly concave. In Camelus the inferior border may show a 

 distinct concavity between a point below M 3 and the symphysis. 

 The high coronoid process shows a nearly even width or antero- 

 posterior diameter for the greater part of its height. 



Measurements op Skull 



No. 20028 No. 20040 



Length, anterior end of premaxillaries to posterior 



end of occipital condyles 571. mm. 573. 



Length, anterior end of premaxillaries to anterior 



end of inferior nasal opening 316.4 318. 



Length along median line, anterior end of premaxil- 

 laries to posterior end of superior molar series.... 341. 362. 



Length along median line from anterior border of 

 premaxillaries to plane connecting anterior bord- 

 ers of orbits 324.5 322. 



Greatest width at posterior region of orbits 245. 251. 



Greatest height of orbits 63.3 61. 



Least width of brain-case immediately behind orbits 77. 83. 



Least width of rostral region between superior canine 



and cheek-tooth series 62.9 



Greatest anteroposterior diameter of right ramus of 



the mandible 452. 469. 



Greatest height of mandible below posterior border 



of M 3 109. 103. 



Height of mandible below anterior border of P., 60. 61. 



Length of diastema between inferior canine and P 4 100. 112. 



DENTITION 

 Dental formula, Ii, C}, Pf, M| 



The dentition in general shows more resemblance to that of 

 Auchenia than to any other form. 



I 3 is a little larger than the superior canine. It is a laterally 

 compressed, recurved, lanceolate tooth quite similar to I 3 of 

 Auchenia. The lower incisor dentition was of much the same 

 type as in Auchenia. I, was at least as large compared with T, 

 and I 2 as in Auchenia; it seems distinctly larger than in Holo- 

 meniscus hesternns from Texas figured by Cope/' 



s Cope, E. D., Geol. Surv. Texas, 3rd. Ann. Eep. for 1891; pi. 21, fig. 4. 



