Suborder II. QUADRUMANA. 



The hands and feet with an opposable thumb and great toe, which 

 have broad flat nails. Fingers and toes similar. 



Quadrumana, Ouvier. 

 Primates, Dahlbom, 1854. 



Fam. II. SIMIAD^. 



Cutting-teeth A, contiguous, erect, opposed. Grinders f . f ; teeth 

 32. Nostrils in front of the nose, separated by a narrow septum. 

 Claws all aUko, of thumb flat, short. Buttocks callous, except in 

 Simiina. Warm parts of Eastern Hemisphere. 



The genus Ghiercza has the nostrils rather wide apart in front, as 

 in some Cehidce ; but it has five grinders in each jaw, and the 

 African habitat and habits of Simiadce. Nyetipithecus (a genus 

 of Cehidce) has the nostrils placed much as in Simiadce ; but it has 

 the number of teeth, the revolute tail, and the American habitat of 

 Cebidce. 



Such exceptions to the characters of orders, families, and genera 

 arc 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 axd Gteneea. 



Section A. xAnthropoid. The arms much longer than the legs. Walking 

 suberect. Tail none. 



Tribe I. Simiina. Bodg stout. Toes and fingers short. Buttocks hairy. 



1. MiMETES. The armsreaching- to the knees. Nails flat. Ears large. 



Africa. 



2. GoRiELA. The arms not reaching to the knees. Ears moderate. 



Afi'ica. 



3. SiMiA. The arms reaching to the ankles. Ears moderate. Asia. 



Tribe IT. Hylobatina. Body and lirnbs slender. Hands and feet 

 long, slender. Buttocks callous. Asia. 



4. Siamanga. Second and third toes united. Throat dilatUe, of male 



bald. Face rather produced. 



5. Hylobates. Second and third toes scarcely united. Throat hairy. 



Face nearly flat. 



Section B. Quadrupedal. The arms shorter than the legs, or rarely 

 subequal. Walking on all fours. Tail distinct. Biittocks callous. 



Tribe III. Presbytina. Head roundish. Nostrils on the sloping face. 

 Hands and feet very long, slender. Thumb small or wanting. 

 Stomach complicated. 



a. Thumb short. Asia. 



G. Nasalis. Nose very prominent. Body stout. 



