366 
ME. ST. GEOEGE MIVAET ON THE SKELETON OE THE PEIMATES. 
axis of the pes (through their proximal ends being bevelled off), it inclines outwards 
and backwards, as in the human foot. 
11. The shafts of the four outer metatarsals do not become broader distally, but 
almost, if not quite, always taper somewhat from near the base to near the head of each. 
12. Planes antero-posteriorly directed and drawn from the middle of the dorsum of 
each metatarsal to the most prominent part of its plantar surface do not converge at 
least in any Anthropoidea. 
13. Sometimes strongly marked transverse dorsal grooves limit proximally the arti- 
cular surfaces of the distal ends of the metatarsals. 
14. The third metatarsal (except in Simia and Cheiromys) always exceeds in length 
the third metacarpal of the same species. 
15. Except perhaps in some Lemuroids, the metatarsals are more slender than are 
the metacarpals in the same individual. 
16. There is a prominence at the proximal end of the plantar surface of the innermost 
metatarsal. 
17. There is a large process projecting backwards in some from the proximal end of 
the fifth metatarsal. 
18. The length of the hallux with its metatarsal always exceeds the pollex with its 
metacarpal, except in Simia, Hylobates, Hapale, Tarsius, and Cheiromys. 
19. The hallux extends further, in relation to the index of the pes, than does the 
pollex in relation to the index of the manus, in the great majority of forms. 
20. Except in Perodicticus, the proportion of the longest digit of the pes to the 
longest metatarsal is always less than that borne by the longest digit of the manus to 
the longest metacarpal. 
21. The phalanges of the pes are generally more slender than are the homotypal ones 
of the manus in the same individual. 
The pes of Apes and Lemuroids differs from the foot of Man and resembles his hand, 
in that — 
1. The proportion borne by the pes to the rest of the pelvic limb almost always 
exceeds that borne by the manus to the rest of the pectoral one. 
2. The proportion borne by the pes to the tibia is generally greater than that borne 
by the manus to the radius, reversing the conditions existing in Man. 
3. The innermost digit is supported on a strongly convex surface. 
4. The innermost digit diverges from the others, and the transverse axis of its head 
forms an angle which approaches 90°, with a line joining the heads of the other 
metatarsals. 
5. The metatarsus in many exceeds the tarsus in length. 
6. The phalanges, and therefore the four outer digits, are of such length as compared 
with their metatarsals and with the hallux. 
7. Neither the first nor the second digit is ever the longest one of the pes. 
8. There is such an amount of plantar flexion on the joints. 
