ME. ST. GrEOEGrE MIYAET ON THE SKELETON OE THE PEIMATES. 
417 
articular surface convex ; metatarsal of hallux with no articular surface for metatarsal 
of index ; third digit of pes almost always the one extending furthest forwards, if not 
the third, then the fourth ; phalanges of pes long, broad, and flattened or concave 
beneath, much like those of the manus ; hallux always with two phalanges. 
CEBIDiE. 
Inner condyle of humerus generally produced downwards nearly to the level of the 
margin of the inner part of the trochlea ; often a supracondyloid foramen ; radius only 
one-fourth of the length of the spine ; proportion of hallux, without its metatarsal, at 
100, to pes, from about 18-4 to 201 ; hallux reaching from the middle to the distal end 
of the proximal phalanx of the index ; ultimate phalanges never laterally compressed, 
sharply curved and pointed. 
ATELES. 
Pelvic limb sometimes shorter than the pectoral one ; proportion of pectoral limb to 
spine greater than in any other Cebidse, or than in any Lemuridae or lower Simiidae ; 
proportion of pelvic limb to spine greater than in any other Anthropoidea except Hylo- 
bates ; length of scapula to spine greater than in any other of the Anthropoidea except 
the Simiinae ; its anterior border less than half of the length of its axillary border ; angle 
of glenoid surface, with axillary margin, about 110°; posterior vertebral angle about 30°; 
proportion of the supraspinous fossa to the infraspinous fossa very large ; spine not quite 
reaching the vertebral margin ; a suprascapular foramen ; surface for teres major not pro- 
jecting ; acromion very long and narrow ; clavicle nearly a fifth of the length of the spine ; 
tubercle for trapezoid ligament very marked; humerus more than half of the length 
of the spine ; tuberosities small and decidedly below the head of the humerus ; no supra- 
condyloid foramen ; ulnar ridge of trochlea very small and not descending below the 
inner condyle ; medullary foramen of humerus opening at the end of a long groove ; 
styloid process of ulna enormous ; medullary foramen of radius often directed distad ; 
manus nearly half of the length of the spine ; pollex often less than one-tenth of the length 
of the same ; proportion of metacarpal of pollex to spine sometimes greater than in any 
other of the Cebidae or Hapalidse ; pollex often with only one phalanx ; pisiforme small ; 
trapezium with no distal concavity ; crest of ilium much arched, concave outwards ; 
tuberosity of ischium very small ; acetabulum very shallow ; peroneal trochanter small, 
not so high as head of femur; peroneal trochanter not projecting peronead beyond 
shaft ; pit for ligamentum teres very large ; outer condyle much smaller than the inner 
one ; pes exceeding half the length of the spine ; pes shorter in proportion to the manus 
than in any other Primates except the Simiinse and Cheiromys ; hallux much more than 
twice and a half the length of the pollex. 
LAGOTHKIX. 
Pelvic limb slightly longer than pectoral one; pectoral limb more than once and a 
quarter the length of the spine; proportion of supra- to infraspinous fossa even 
