466 DR. J. MURIE ON SAIGA TARTARICA. [June 9, 
The above author observes ‘‘ molares utringue 5 in junioribus.” 
The extreme length of each series of the grinding-teeth above and 
below is 2°7 inches. The palatal breadth or distance between the 
two hindermost upper molars is 1°6, and betwixt the opposite ante- 
rior premolars 1*1 inch. The pattern of the teeth, as might be 
anticipated, is bovine, although they do not strictly conform to any 
special genus; for instance, the upper molars are sheep-like, the 
premolars rather antilopine, and the incisors a modification of both. 
The maxillary premolars are altogether small—the two anterior 
particularly so; but the third is somewhat larger. ‘The first is 
single-, the second double-, and the third triple-rooted. Measured 
serlatim they have individually a breadth of 0-2, 0°3, and 0°4 inch, 
and a transverse diameter of 0°18, 0°2, and Q°3inch. Their external 
longitudinal enamel ridging is but moderately developed, the third 
premolar being comparatively smooth-surfaced, or with only a slight 
development of the anterior ridge. 
The three true molars behind these together occupy a space of 
1°8 iach long; and they increase in size from the first to the third. 
As in the Bovide, their antero-posterior is greater than their trans- 
verse diameter; in other words, their breadth is greater than their 
thickness. Nevertheless they are stout, and relatively and absolutely 
thick, indeed much more so than obtains in Antelope-skulls of cor- 
responding dimensions. ‘The enamel layers are of considerable den- 
sity. The two outer depressions are remarkably shallow and broad, 
and the bounding longitudinal enamel ridges very moderately ele- 
vated—notably so in the last molar, its anterior ridge alone being 
well marked. On the crown the semilunar vertical enamel folds are 
simple, with a medium-sized cleft or valley ; no trace of secondary 
folds exists. Internal accessory enamel columns, as in the Ox, and 
supplemental lobes, are wanting. 
The crowns of the three upper molars have the following dimen- 
sions :—The anterior 0-5, the penultimate 0°7, and the posterior 0°8 
inch broad, and each is about 0:4 inch in greatest thickness or trans- 
verse diameter. 
The lower incisors and canines closely set together form a fan- 
shaped expansion 1:7 inch wide; they are not entirely procumbent, 
but rather tilted obliquely forwards and upwards. The canines or 
outermost of the four on each side are the smallest ; and the incisors 
progressively increase in size from without inwards. Their outer 
edges overlap the median incisor, being lowest. The incisors are all 
more or less spatulate, with a sharp cutting-edge; their upper outer 
border, where the neighbouring tooth overrides, is slightly ridged ; 
and from the summit the surface shelves to either side. The largest, 
innermost incisor is moderately expanded at the summit, the others 
less so. 
A long slender diasteme precedes the mandibular molar series. 
The first premolar present, situated at the uprising of the ridge, is 
almost conical, and very small. No trace of its whereabouts could 
be detected in the mandible of the Society’s older animal ; and in the 
skeleton of the wild Saiga at the College of Surgeons, on one side it 
