MB. ST. GEORGE MIYART ON THE SKELETON OF THE PRIMATES. 
419 
not rising to the level of the top of the head of femur, and projecting very slightly 
peronead beyond the shaft ; ridge for gluteus maximus very strongly marked ; outer 
condyle much smaller than the inner one ; patella rather long and narrow ; hallux 
reaching nearly to the middle of the proximal phalanx of the index. 
NYCTIPITHECUS. 
Anterior margin of scapula strongly convex, and suprascapular notch well defined, 
but never replaced by a foramen ; a supracondyloid foramen generally * present ; con- 
dyles of femur nearly equal ; proportion of pes to whole hind limb and to tibia greater 
than in any other of the Anthropoidea except Simia and Hapale ; fourth digit of pes 
s.ometimes longest and most projecting. 
CALLITHRIX. 
Scapula with no projection for the teres major; no suprascapular foramen, but the 
notch sharply defined ; a supracondyloid foramen ; length of radius to spine less than 
in any other of the Anthropoidea except Hapale ; condyles of femur about equal in size 
and production backwards. 
CHRYSOTHRIX. 
Proportion of pectoral limb to spine smaller than in any other of the Anthro- 
poidea ; anterior margin of scapula convex, and equalling four-fifths of the length of its 
axillary one ; no suprascapular foramen ; spine at its glenoidal end coming remarkably 
close to the same margin ; surface for teres major very marked ; suprascapular notch not 
well defined ; manus scarcely more than a fifth of the length of the spine ; length of pollex 
and of longest digit to spine less than in the other Cebidee ; femur only two-fifths of the 
length of the spine, and therefore relatively shorter than in any other Anthropoidea 
except Hapale ; condyles rather unequal ; pes shorter in proportion to spine than in 
any other of the Anthropoidea except Man, and sometimes Cynocephalus. 
PITHECIA. 
Supraspinous fossa very small when compared with the infraspin ous one (Plate XI. 
fig. 5) ; anterior vertebral angle sometimes distinctly marked ; suprascapular notch very 
little defined ; a supracondyloid foramen ; internal condyle not descending to the level 
of the inner margin of the trochlea; fourth digit the longest, and projecting most in 
both the manus and the pes. 
bRachyurus. 
Anterior vertebral angle of scapula not distinctly marked ; suprascapular notch very 
little defined; a supracondyloid foramen; internal condyle descending as low as the 
inner margin of the trochlea ; spine of ischium rather prominent from the inclination 
downwards (forwards) of the tuberosity of the ischium. 
MDCCCLXVII. 
* In N. villosus (No. 58 b. in the British Museum) there is none. 
3 L 
