414 
MR. ST. GEORGE MIYART ON THE SKELETON OE THE PRIMATES. 
about 34° ; angle formed by spine with the axillary border about 30° ; supra- and infra- 
spinous fossae about equal in breadth at the glenoidal end of the spine ; sternal horizontal 
curve of clavicle almost obsolete ; subacromial space scarcely at all concave ; humerus 
when looked at in front, with the ulnar tuberosity hiding the neck of the bone ; ulnar 
ridge of trochlea projecting very little below the capitellum; manus less than three- 
fourths of the length of the radius: iliac fossa strongly concave; a distinct subpubic groove; 
shaft of femur expanding gradually downwards ; great trochanter not projecting at all, 
peronead beyond the shaft of the femur ; trochanteric fossa very shallow' ; sometimes no 
depression for the ligamentum teres ; external condyle projecting back much less than the 
internal one ; surface above the inner condyle not prominent ; inner surface of malleolus 
not nearly at right angles with the distal articular surface of the tibia ; length of hallux, 
without the metatarsal, less than one-fifth of that of the pes; tuberosity of calcaneum 
at its maximum of relative length, and produced only downwards (Plate XIII. fig. 6); 
astragalus at its minimum of length to breadth (Plate XIII. fig. 7); surface for tibial 
malleolus nearly on a level with the top of the astragalus ; tarsus largely exceeding meta- 
tarsus in length ; hallux reaching the distal end of the proximal phalanx of the index. 
T. NIGER. 
Proportion of supraspinous fossa of scapula only moderate as compared with infra- 
spinous fossa ; spine reaching quite or almost to vertebral margin, and sometimes end- 
ing nearer to the anterior than to the posterior end of the latter; posterior vertebral 
angle only about 22° ; angle formed by spine with axillary margin about 20° or 24° ; 
supraspinous fossa much wider than the infraspinous one at the glenoidal end of the 
spine ; sternal horizontal curve of clavicle rather marked ; subacromial space decidedly 
concave ; ulnar tuberosity not hiding the neck of the humerus wdien the bone is looked 
at in front; ulnar ridge of the trochlea projecting much below capitellum; manus more 
than three-fourths of the length of the radius ; iliac fossa very slightly concave, or not at 
all so ; no subpubic groove ; shaft of femur expanding suddenly at the condyles ; great 
trochanter projecting slightly peronead beyond the shaft of the femur ; trochanteric fossa 
very deep ; pit for the ligamentum teres constantly present ; condyles projecting back- 
wards not very unequally ; surface above the inner condyle prominent ; inner surface 
of malleolus nearly at right angles with the distal articular surface of tibia ; length of 
hallux, without the metatarsal, one-fifth of that of the pes, or more ; tuberosity of calca- 
neum concave behind, and produced both upwards and downwards ; surface for tibial mal- 
leolus forming a decided angle with upper surface of astragalus ; hallux reaching a little 
beyond the proximal end of the second phalanx of the index. 
SIMIA. 
The main characters of this genus have been already given among “Exceptional 
forms.” 
