104 
TEIITIAEY VERTEEEATA OF THE FATtJM. 
tlio ])()int of the upper canine tusk, while in FJotlie'fhcm, a more nearly related form, 
there arc' somc'times two jcairs of such processes, hut they are directed downwards and 
more or less clnh-shajced : in the latter e'enus also their function is unknown. 
On the side of the jaw there are several foramina. The most anterior of these is 
immediately behind the alveolus of /. 1, the next two are beneath i. 3 and c., while the 
last is behind the jcosterior border of the symphysis at the level of pm. 2. 
The first incisors (/. 1) are broken off short, but it can be seen that they were greatly 
enlarged and directed forwards. They were laterally comjcressed so as to give an 
elongated oval outline in section ; the outer side, at least, was enamel-covered. The 
second incisor (i.2) w'as a small rounded tooth, represented in this specimen by its 
alveolus only. Behind this, at an interval of about 1’4 cm., is a small rounded root of 
a tooth and immediately behind this a second rather larger. The nature of these is 
doubtful : they look as if they might be roots of one tooth, but since from their position 
this is not probable, they are here regarded as the roots of the third incisor (i. 3) and 
the canine (c.). The distance between the canine and first premolar is about 1 cm. This 
enlargement of the anterior incisors and the very small size of the canine distinguish 
(.Teiiio/n/iis from the other members of the family, and at least justify its seicaration in a 
distinct subfamily. The anterior premolar {/>m. 1) is a compressed tooth consisting of small 
anterior and posterior tubercles and a high main cusp. In the next {pm. 2) there is a small 
cingular ridge in front of the tooth and the main cusp is much larger, showing a tendency 
towards division into an outer and an inner element. In wear it aives a trianouhir 
surface, from the outer angle of wdiicli a ridge runs down the outer face of the tooth, 
while from its front angle there is a small ridge connecting it with the anterior tubercle, 
and similarly posteriorly a small ridge unites it with the posterior tubercle. The next 
tooth (pm.o) is similar, exce})t that the posterior lobe is larger and show's a tendency to 
give a V-sha})ed surface in wear. In the last premolar {pm. 4) the re})lacenient of the 
main cusp by two elements is complete, the inner being small and rounded, the outer 
larger and V-shaped in wear. From the anterior arm of the V a small ridge runs to the 
small anterior tubercle, while from the posterior a low ridge runs back uniting it with 
the anterior limb of the V-shaped posterior lobe. On the inner side of this last there is 
a trace of a small inner tubercle corresponding to the postero-internal cusp of the molars. 
The characters of the molars are those of a ])rimitive member of the Siiidm, in which 
the outer cusps are distinctly selenodont. Each molar consists of two pairs of cus])s, the 
outer V-shap('d, the inner more rounded or pyramidal. In the first molar (/«. 1) the 
outer cusp is consitlerably worn ; it consists of tlu^ main tubercle forming the apex of 
the V, of which the arms form slight ridges terminating in small accessory tubercles, of 
which the anterior is situated on the anterior border of the tooth, while the ])osterior is 
connected by a slight ridge w'ith the posb'ro-internal angle of the inner cmsp. The 
postero-external cusp shows the selenodont character still more clearly: its small anterior 
accessory tubercle partially tills the main transverse valley ; the posterior accessory 
tubercle is on the hinder bordt'r of the tooth. The internal cusps are trihedral, and 
in wear they also show some temh'iicy to foian a V-shaped surface, the opening of the 
V of the antero-internal cusp looking outwards and backwards, that of the postero- 
intcumal cusp outwards and forwards. Tlu're is a slightly d(!V(doped cingulum on the 
outer side of the tooth, most marked opj)osite the o[>cning of the transverse valley and 
