1913] Merriam: A Camel from Raneho La Brea 



321 



species is of Tertiary age, and presumably specifically if not 

 generically distinct from the Raneho La Brea form. 



Comparison with the Forms referred to by Cope as Holo- 

 meniscus hesternus, TI. sulcatus, H. vitikerianus, and TI. macro- 

 cephalus. — A fine mandibular ramus from Bowie Bend. Austin 

 County, Texas, was considered by Cope 11 to represent the same 

 species as the type of Leidy's Auelicnia hesterna. Cope's speci- 

 men is undoubtedly near hesterna, and resembles it more closely 

 in the dimensions of M 1 and M 2 than does specimen no. 20028 

 from Raneho La Brea. The reference of this specimen to hes- 

 terna by Cope on the basis of evidence then available seems 

 justified. 



Compared with Cope's Texas type of Holomeniscus hesternus 

 the specimens from Raneho La Brea show a slightly larger 

 mandible with more widely spreading incisors and a larger I 3 . 

 As nearly as can be determined, I, of the Raneho La Brea speci- 

 mens is much larger compared with I 2 than in the Texas form. 

 The dimensions of the cheek-teeth are closely similar in Cope's 

 specimen and no. 20040 from Raneho La Brea. The Texas speci- 

 men and those from Raneho La Brea are evidently generically 

 identical. The characters separating them are doubtfully of 

 specific rank. The determination of the exact specific relation- 

 ship of these two forms may well await an examination of all 

 possible collections from Raneho La Brea, to determine the limits 

 of variability of the California form. 



A specimen from Tequixquiac, Mexico, described by Cope 1 '- 

 is near the form from Texas 



Holomeniscus sulcatus Cope from Texas is near the Raneho 

 La Brea species in many characters. The type of H. sulcatus is 

 an old individual with worn P 4 and M x , and measurements of the 

 dentition are very close to those of no. 20028 from Raneho La 

 Brea, in which the teeth give evidence of a similar stage of wear. 

 As has been suggested by Wortman, the peculiar characters of 

 this species may be shown later to come within the limits of 

 individual or age variations of one of the previously described 

 forms, like Camelops kansanns or C. hesternus. 



11 Cope, E. D., Geol. Surv. Texas, 3rd Ann. Rep. for 1891, pp. 71 and 83. 



12 Cope, E. D., Amer. Phil. Soc. Proc, vol. 22, p. 18. May 16, 18,84. 



