‘OBSERVATIONS ON LLAMA REMAINS FROM COL- 
ORADO AND KANSAS. 
By F. W, Cracry, Colorado Springs, Col. 
Restricting the genus, Auchenia, to llama-like forms having the 
premolar formula 7, and considering that the dentition of A. 
californica (Leidy) is unknown, the transfer of A. hesteria 
(Leidy) to the genus, Holomeniscus, which Cope* has suggested 
on the ground of the probable absence of Pm. 3,7 has rendered 
it doubtful whether any of the west American Caimelid@ belong 
to Auchenia proper. 
I am indebted to Mr. R. C. Hills, for opportunity to study the 
remains of a cameloid form obtained by him from volcanic ash- 
beds on a small tributary of the’ Huerfano river, in Huerfano 
county, Colorado. These remains, which are now deposited, in 
the cabinet of the Colorado Scientific Society at Denver, include 
considerable portions of both maxillaries and mandibles and more 
or less perfect contained teeth, with various other parts of the 
skeleton, and pertain to a true Awchen/a, the molar dentition 
presenting the formula Pm. 7, M. 3. 
I was at first inclined to identify this Auchenia with A. hesterna 
Leidy; but geographical and some other considerations seem to 
render it more probable that Cope’s identification of the maxillary 
in the Condon collection from the Oregon desert with that species 
is correct; and it is certain that that maxillary, as described, 
represents a different species from the Huerfano county Auchenta, 
whether Cope’s inference of the absence of Pm. 3, and his con- 
sequent reference of the specimen to the genus, /Tolomeniscus, be 
justifiable or not. 
The Oregon desert maxillary is described as having the Pm. 4 
anteriorly attenuated, and this to such an extent as to render it 
‘‘almost certain that there was no third premolar in front of it.”’ 
In the Huerfano specimen, there is a well developed two-rooted 
antero-posteriorly elongate Pm.3, while the large three-rooted Pm. 4 
is two-rooted anteriorly and has its crown in the form of a quadrate 
prism, the grinding surface presenting a single large crescentic la- 
euna. In form, the third and fourth superior pre-molars thus have 
some general resemblance to those of Procamelus occidentalis. 
*Extinct Mammalia of the Valley of Mexico, p. 17. 
tInferred from the anteriorly attenuated Pm. 4 in a superior maxillary 
fragment from the Oregon desert, believed by Prof. Cope to pertain to 
hesterna. 
