362 DR. J. MURIE ON THE [May 26, 
nasals narrow forwards much more and taper to a point, as in the 
Goatsand Antelopes. 2. Thesupraorbital fissureis minute. 3. The 
supraorbital or antecorneal foramen is small. 4. The horns are round, 
more erect, and prongless. 5. The premaxillary does not articulate 
with the nasal. 6. The frontal region is much rounder and more 
highly arched. 7. The masseteric ridge ascends high before the orbit. 
8. It wants the anterior palato-maxillary valley so conspicuous in the 
Prongbuck. 9. The horizontal plate of the palate-bone is relatively 
shorter. 10. In the Chamois the palatine arch of the posterior nares 
is narrow and acute, in the Prongbuck widish and rounded. 11. In 
the first of these the basioccipital and the basisphenoid are much 
flatter than in the second. 12. The auditory bulle are very small 
and compressed, much more Goat-like by many degrees than are 
those of Antilocapra. 13. The paramastoid of the Chamois greatly 
exceeds that of the last-mentioned genus, and is more pointed. 
14. The glenoidal articulation is convex to its outer edge, and the 
posterior transverse ridge is rudimentary. 15. The occiput is anti- 
lopine and not cervine in its character, inasmuch as it is prominently 
convex. 16. The condyles are rounded or not so sharply mesially 
ridged into a partially double facet as in the Prongbuck and Deer ; 
and they jut rearwards and not so much downwards as in these. 
17. The foramen magnum is decidedly very large. 
(e) Dentition.—As respects the deciduous dentition of the Prong- 
buck my observation is confined to a skull of an apparently adult 
animal in the College of Surgeons’ Museum. In the said specimen, 
No. 3713, the three upper and lower deciduous premolars present 
(corresponding to the second, third, and fourth premolars of other 
Bovidee ?) are partially uprooted and about to be replaced by their 
successors. The permanent successors seem nearly equally advanced ; 
the canines less so. Judging of the age of the animal by the cha- 
racter of the horns, I should be inclined to think the change of den- 
tition in the Prongbuck coincidentally approximates to what obtains 
in the Sheep. 
The dental formula and series throughout are facsimiles of what 
is met with in the majority of Antelopes. 
The upper molars have smooth shallow outer concavities and low 
ridges. The hindermost tooth has a posterior tubercle. There 
are neither supplementary enamel columns nor lobules in these. nor 
in the lower molars. The median central crescents are of moderate 
size and simple. 
The premolars of the superior and inferior maxille are fair-sized, 
increasing from the first to the third. 
The three mandibular true molar teeth have their longitudinal 
enamel ridges ill defined ; the concave internal depressions are very 
shallow. The outer lobes of the teeth are more angular than rounded. 
The crescentic fissures of the grinding-surface are simple. 
The incisors are sloping, subequal, and not equal-sized as Turner 
mentions ; for the middle ones are moderately expanded at the tips 
and slightly larger than those outside. 
