4 SIMIAD, 
Suborder II. QUADRUMANA, 
The hands and feet with an opposable thumb and great toe, which 
have broad flat nails. Fingers and toes similar. 
Quadrumana, Cuvier. 
Primates, Dahlbom, 1854. 
Fam. II. SIMIADA. 
Cutting-teeth 4, contiguous, erect, opposed. Grinders 2.8; teeth 
82. Nostrils in front of the nose, separated by a narrow septum. 
Claws all alike, of thumb flat, short. Buttocks callous, except in 
Simiina. Warm parts of Eastern Hemisphere. 
The genus Guereza has the nostrils rather wide apart in front, as 
in some Cebide; but it has five grinders in each jaw, and the 
African habitat and habits of Simiade. Nyctipithecus (a genus 
of Cebide) has the nostrils placed much as in Simiade ; but it has 
the number of teeth, the revolute tail, and the American habitat of 
Cebidee. 
Such exceptions to the characters of orders, families, and genera 
are constantly to be observed, showing that animals cannot be 
arranged by any single character, but by the result of a number of 
characters which, taken together, give the peculiarity of the group. 
Synopsis OF TRIBES AND GENERA. 
Section A. ANTHROPOID. The arms much longer than the legs. Walking 
suberect. Tail none. 
Tribe I. Srummna, Body stout. Toes and Singers short, Buttocks hairy. 
1, Mimetzs. The arms reaching to the lmees. Nails flat. Ears large. 
Africa. 
2. Gormia. The arms not reaching to the knees. Ears moderate. 
Africa. 
8. Srmza. The arms reaching to the ankles, Ears moderate. Asia. 
Tribe I], Hytopatina. Body and limbs slender. Hands and feet 
long, slender. Buttocks callous, Asia. 
4, Stamanea. Second and third toes united. Throat dilatile, of male 
bald. Face rather produced, 
5. Hyzoparss, Second and third toes scarcely united. Throat hairy. 
Face nearly flat. 
Section B. QuapruprpaL. The arms shorter than the legs, or rarely 
subequal, Walking on all fours. Tail distinct. Buttocks callous. 
Tribe III. PrespyTina. Head roundish. Nostrils on the sloping face. 
Hands and feet very long, slender. Thumb small or wanting. 
Stomach complicated. 
a. Thumb short. Asia. 
6. Nasatis, Nose very prominent. Body stout. 
