406 
ME. ST. GEOEGE MI VAST ON THE SKELETON OE THE PEIMATES. 
3. The degree to which the head of the femur is bent forwards. 
4. The presence of a tubercle, projecting downwards on the tibia, beneath the pit for 
The semi-membranosus. 
Lokis. 
In this genus the humerus is longer, in proportion to the spine, than in any other 
Lemuroid, and longer, in proportion to the scapula, than in any others of the Pri- 
mates except Ateles and Hylobates, which two genera alone have the shaft narrower, in 
proportion to its length, than in Loris. 
The radius exceeds the humerus more than in any others except Tarsius, the Indri- 
sinae, and sometimes Cynocephalus and Hylobates. 
The manus, as compared with the spine, is shorter than in any other Primates except 
Chrysothrix and Arctocebus. 
The proportion borne by the longest digit to the spine is less than in any other 
Primate except Arctocebus. 
The proportion of the index to the spine is less than in any except Perodicticus and 
Arctocebus * ; as also is that of the metacarpal of the index to that of the pollex. 
The length of the pollex, as compared with that of the longest digit, is greater than in 
any others except Hapale, Arctocebus, Cheiromys, and perhaps Man. 
The length of the third metacarpal, compared with that of the whole manus, is less 
than in any others except Brachyurus and Arctocebus. 
The pubic symphysis, as compared with the length of the spine, is shorter than in any 
other Primate except Perodicticus. 
The tuberosity of the ischium is more prolonged upwards and forwards towards the 
spine of the ischium (Plate XIII. fig. 3) than in any other Primate except Man. 
The proportion of the length of the femur to that of the humerus is less than in any 
other Primates (other than the Simiinse) except Ateles, Lagothrix, and Mycetes. 
The length of the pes in proportion to that of the rest of the hind limb and of the tibia 
is less than in any other Primate except Man and Hylobates. The same in proportion 
to that of the spine is less than in any other Primate except Lemur and Arctocebus. 
The os calcis is shorter, compared with the spine, than in any other genera except Arc- 
tocebus and Perodicticus ; but the cuboid is longer, as compared with the os calcis, than 
in any other Primate except sometimes Hylobates. 
The proportion borne by the hallux to the pollex is greater than in any other 
Primates except Colobus and Ateles. 
The index of the pes more exceeds that of the manus in length than in any other 
genera of the order except Perodicticus and Arctocebus. 
The length of the hallux, with its metatarsal, compared with that of the pes, is greater 
than in any other Primates except Indris and Arctocebus, and perhaps (?) Perodicticus. 
Without its metatarsal, and so compared, it exceeds all except the same last-men- 
tioned genera, the Chimpanzee, and Man. 
* I have not been able to ascertain the proportion in Nycticebus. 
