394 R. S. Lull — Neiv Camels in 



tensis the closure of the orbit is a notable distinction from 

 Poebrotherium. The present form is referred to the 

 genus Pseudolabis, subgenus Parcdahis, subgen. nov., and 

 the specific name is given in recognition of the very high 

 attainment of Doctor W. D. Matthew as a leader in pal- 

 eontologic research. 



Measurements. 



Y. P. M. 10167 A. M. N. H. 9807 



P. matthewi Ratio P. dakotensis 



mm. mm. 



Length, I^ to condyle 219.0 



P to M^ 122.0 0.88 138.5 



CMo M^ 108.5 



P2 to IVP 69.5 0.83 83.7 



I^, ant. -post, diameter 7.7 



I^, length of crown 14.5 



Diastema, I^ to C^ 5.5 



C\ length of alveolus 7.7 



Diastema, C" to P' 15.5 



Diastema, P^ to P- 10.0 



Length, P^' 8.0 



P3 9.5 



P^ 9.5 



M^ to M^ 43.5 0.906 48.0 



M^ 12.5 



M^ 17.0 



John Day Camels. 



Of the four species of camels which have been described 

 from Oregon, two, Paratylopus (Gompliotherium) stern- 

 hergi (Cope) and P. (G.) cameloides (Wortman), come 

 from the John Day horizon, while the two others, Miolahis 

 transmontauus (Cope) and Procamelus altus Marsh, are 

 from newer rocks. The Yale collection includes the type 

 of the last-named species, while of John Day material 

 there are at least six specimens, some of which pertain to 

 Paratylopus cameloides, the others being evidently new. 

 P. (G.) sternhergi, which comes from an older horizon, is 

 apparently not represented at Yale. 



Paratylopus (Gompliotherimn) cameloides (Wortman). 



(Figs. 2-4.) 



Type material contained in the American Museum of 

 Natural History, as follows : Cat. No. 8179, holotype, 



