SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. 



117 



"The length of the series of lower molars and premolars 

 together, in the different species, is as follows : 



Length of the series in the llama 32 lines 



Length of the series in the camel 66 lines 



Length of the series in the Auchenia hesterna 84 lines 



"Accompanying the inferior molar specimens from Cali- 

 fornia there is a specimen of an upper molar xxxx which 

 from its constitution and size, is supposed to belong to the 

 same species, if not the same individual." 



More space has been given to these fossils described by 

 Dr. Leidy than might be considered necessary, were it not 

 that, I have been informed that they were all destroyed by 

 the burning of the College Museum where they were installed, 

 so that we have only the illustrations left. The writer secured 

 a joint of the vertebra, a metacarpal and some other bones 

 of the Auchenia, in an excellent state of preservation ; also 

 two portions of lower jaws with teeth, a cervical vertebra 

 and other bones of the Auchenia, in the same county (Ala- 

 meda). These were in a poor state of preservation, but they 

 are packed away among the writer's collections, and at present 

 not accessible for illustration. The joint of the vertebra found 

 with the teeth described, is over eight inches in length, more 

 than twice the length of the corresponding bone of a horse. 



Dr. Leidy mentions another species of Auchenia found in 

 California (A. calif ornica,) and one from Mexico which Pro- 

 fessor Owen called Palauchenia magna, which approximated 

 in size the camel, whereas the Californian Auchenias much 

 exceeded it. 



MEGALOMERYX NIOBRARENSIS, Leidy. 

 Fossil teeth of another large animal of the camel family, 

 named as above, have been found beneath the lava, in Tuo- 

 lumne County, Cal., in the Pliocene. 



RHINOCEROS. 



Bones of Rhinoceros (Aphelops) hesperius, Leidy, were 

 found under the lava in Calaveras County, at Douglas Flat, 

 and Chili Gulch. 



A single molar tooth of Rhinoceros oregonensis f a species 

 reputed to have pertained to the Pliocene deposits of Oregon, 



