464 DR. J. MURIE ON SAIGA TARTARICA. [June 9, 
Cervus. They correspond to Turner’s* so-called posterior tubercles 
of the basioccipital. The basioccipital bone (Bo), an inch long and 
very nearly as much broad, is slightly bayed on either side, though 
somewhat broader in front; and is furnished with two additional 
anterior, externally salient and roughened capitula, Turner’s ante- 
rior tubercles (a.¢.). The basioccipital itself is flat, or has only a 
yery lightly raised mesial linear ridge ; and in this feature, as well as 
continuousf ore breadth, nature of the anterior tubercles, and narrow 
fissure between these and the tympanics, decidedly conforms to what 
obtains in Ovis. 

Base of the skull of the adult male, reduced less than three-sevenths nat. size, 
as is fig. 5. 
Bo. Basioccipital. p.¢, posterior, and a.¢, anterior tubercle of basiocciput. 
Pmd. Paramastoid. Ty. Tympanic. gi. Glenoid. Bs. Basisphenoid. 
au. Auditory process. Vo. Vomer. Ju. Jugal. P/. Palatine (horizontal 
plate). Mz. Maxilla. Pma. Premaxilla. 
The basisphenoid (Bs), unusually wide, flat, or linearly raised 
like the basioccipital, diverges at an obtuse angle from that bone, 
* P. Z.8. 1850, p. 167. 
