392 
MB. ST. GrEOBGE MIYABT ON THE SKELETON OE THE PBIMATES. 
The angle formed by the spine of the scapula with the axillary margin is probably 
more obtuse than in any other Primate. 
The breadth of the glenoid surface, compared with its length, is greater than in almost 
any other of the Order ; nevertheless it is approached by that of the Gorilla, and ex- 
ceeded, sometimes at least, by that of Ateles. 
The proportion of the supraspinous fossa to the infraspinous one is smaller than in 
the great bulk of the Order ; nevertheless it is larger than in the Pitheciinse, Nycticebus 
tardigradus, and Tarsius. 
The anterior margin is scarcely ever convex, and the suprascapular notch is well 
marked, thus differing from the Simiidse and Lemuroidea ; but then in many of the 
Cebidse it is much more defined than in Man. 
The surface for the teres major is more strongly marked than in the Simiinse, or than 
in Indris, Loris, and Nycticebus, but it is not so much so as in others, e. g. the lower Si- 
miidse, Cebus, and Chrysothrix. 
At the vertebral end of the spine there is a flat triangular surface, absent or less 
marked in most, but present in Mycetes, Loris, and Arctocebus. 
The root of the spine approaches the glenoid surface more nearly than in the Gorilla 
and Hylobates, hut yet not so closely as in the lower Simiidse and Cebidse. 
Unlike the bulk of the Primates, the infraspinous fossa, close to the glenoid surface, 
is wider than the supraspinous one ; but then Perodicticus, Pithecia, Loris, and Nyc- 
ticebus resemble Man in this respect. 
The spine differs from that of most Primates in not being grooved below (in all but 
Man behind) at its base; but then it is not so either in the Simiinse, Ateles, Indris, or Loris. 
The coracoid process is largely developed, and projects more away from the glenoid 
surface than in any Simiidse ; in many of the Lemuroidea, however, it is much the same 
as in Man (PI. XII. fig. 2). 
The acromion is so produced that (the long axis of the glenoid surface being vertical) 
it would meet, or nearly so, a plane bisecting the glenoid surface vertically and produced 
upwards ; and it rises at least as high as does the coracoid. In these points Man differs 
from the bulk of the Primates, including the lower Simiidse, but agrees with the Simiinse 
and Lemur. 
The ridge for the trapezoid ligament is less marked than in most Primates, but more 
so than in others, as, e. g., Indris, Lemur, Loris, and Cheiromys. 
The Clavicle . — The length of this bone, compared with that of the spine, is greater than 
in any others, except the Simiinse, but it falls short of the extreme proportion of Hylo- 
bates about as much as it exceeds the very small one of Nyctipithecus. 
Its length, as compared with that of the scapula, is greater than in any other Pri- 
mates, except Simia and Hylobates. 
The subacromial surface is almost always convex, thus differing from nearly all the 
rest of the order ; but the Simiinse and Nycticebinse are more or less similar to Man in 
this respect. 
