1194 The Amblypoda. [ December, 
cotemporary genus Phenacodus, and agreeing with Uintathe- 
rium, hich has been described 
much to the cerebellum re- 
mains uncertain. The ante- 
rior prolongation of the ante- 
| rior pyramids is visible below 
the middle brain, as though 
the pons varolii were wanting 
(Fig. 13 2). 
The characters of the long 
E 2 i bones which are common to 
= A the members of this family 
{ may be observed in the Bath- 
z - modon pachypus, Figs. 14-15. 
The humerus shows the robust 
but not hooked tuberosities of 
mar bain cavity see p sete or the head, and the simple con- 
sonar nat. size. Fig. a, left side; ” dyles. The radius shows the 
ove; c, below. z, origin of trigem inu 1 transverse ae d and 
herve ; ps anterior pyramids, Original, fei simp € ia 
Proceed. Amer. Philos. Soc., 1877. the lateral distal facet. The 
femur (Fig. 15 4) has well developed trochanters, including 
the third, and a fossa ligamenti teris. The ilium (Fig. 15 a) like 
that of animals with a large belly, is much expanded, and has a 
wide peduncle. The pubis and ischium are light. 
The five genera of Coryphodontide differ as follows: 
I. Superior molars wi a 
All the maia molars ik a erail posterior V.....-+: Manteodon. 
II. Last superior molar with but one inner cusp or angle. 
a, Last superior molar with posterior external cusp. 
Anterior two molars with posterior external V.. 
aa, Last superior molar without external posterior cusp. 
Anterior two molars with posterior external V. hodon. 
lus transverse, with internal hook and no facet... .... esse 111" Coryp 
Astragalus subquadrate, with an internal facet and A internal ga 
thmodon- 
hodon. 
tTFirst superior molar only, with posterior external V,....-. + ME 
pele RE Aletta ena noes e a permite 
*See NATURALIST, 1884, p. 898, for figure. 
