ME. ST. GEOEGE MIVAET ON THE SKELETON OF THE PEIMATES. 
407 
Loris differs from every other Primate in — 
1. The very cylindrical shape of the radius and ulna. 
2. The shortness of the manus to the rest of the pectoral limb. 
3. The shortness of the manus to the radius. 
4. The exceeding smallness of the ilio-pubic angle. 
5. The narrowness of the pelvis compared with its conjugate diameter. 
6. The large relative size of the body of the pubis. 
7. The extent to which the vertical diameter of the posterior outlet of the pelvis 
exceeds its transverse diameter. 
8. The very small absolute length of the symphysis pubis. 
9. The coexistence of small tuberosities (prolonged up nearly to the spines of the 
ischium) with a narrow ilium. 
10. The small breadth of the true pelvis compared with the length of the os innomi- 
natum. 
11. The closeness of the tibial trochanter to the head of the femur. 
12. The extent to which the longest digit of the foot exceeds that of the hand. 
13. The large extent to which the pollex exceeds a hallux with two phalanges. 
14. The great length of the third digit (without its metatarsal) compared with that 
of the whole pes. 
15. The length of the longest digit (without its metatarsal) compared with that of the 
tarsus. 
Tarsius. 
This highly interesting form, which perhaps stands lowest in the order*, presents 
many peculiarities. 
The length of the entire pectoral limb, when compared with that of the spine, is greater 
than in any other genus of the order except Hylobates ; and the same is the case with 
regard to the pectoral limb minus the manus (in the specimens examined by me), though 
Ateles and Simia come very close to Tarsius in this proportion. The proportion borne 
by the length of the scapula to that of the spine is greater than in any except the 
Simiime. 
Similarly compared, the radius exceeds that of all except the Simiinae and Ateles, and 
the manus is longer than in any except perhaps Cheiromys ; and the last named is, more- 
over, the only genus in which the manus is yet more in excess of the radius in length. 
The length of the first phalanx of the third digit, compared with that of its metacarpal, 
is greater than in any other Primate except Cheiromys ; and its length, as compared with 
that of the manus, is about the same as in that genus, and greater than in any other. 
I have found the ilio-pubic angle smaller than in any other Primate except Loris. 
The length of the os innominatum, compared with that of the spine, is greater than in 
any other Primate except the Simiinae, Cynocephalus, and Ateles. 
* It has been suggested to me by Dr. Petebs that Tarsius is a lower form than Cheiromys. 
