54 



V. MIDIDAE. 



GENERA. 



Saguinus LsLC=Hapale Geoff. 



Ilapale Gray. Jacchus Gray. 



Cebuflla Gray. Mico Gray. 

 Midas Geoff. 



Leontojtithecus Gray. Oedipus Gray. 



Midas Gray. Seniocebus Gray. 



PROSIMIAE. 

 FAMILIES. 



I. Teeth of three kinds, the canines being retained through life. Incisors 

 small, with simple roots. Pectoral mammae developed, in addition to 

 inguinal ones. (Owen.) (Lemuroidea.') 



A. Fibula entirely distinct from the' tibia. Skull with the orbits open 

 behind. Incisors of upper jaw small, (rarely wanting,) separated into 

 two groups by a symphysial interspace ; of lower jaw, larger, contiguous, 

 and proclivous; canines of lower jaw parallel with and like incisors. 

 Pes with the second toe armed with a subulate claw ; rest with flattened 

 nails. 



LEMURIDAE. (VI.) 



B. Fibula partially anchylosed with the tibia. Skull with the orbits parti- 

 ally closed behind by the unio,n above of the alisphenoid with the jugal. 

 Incisors of upper jaw (4) contiguous, inner large and conic; of lower 

 (2) contiguous and opposed to large upper teeth: canines of lower jaw 

 normal. Pes witli the second and third toes armed with subulate nails ; 

 rest with flattened pointed nails. 



TARSIIDAE. (VII.) 



II. Teeth of two kinds, the canines being early deciduous. Incisors f , gli- 

 riform, continually reinforced from the formative pulp; the fangs very 

 long, those of the lower jaw extending backwards to the base of the coro- 

 noid processes. Inguinal teats only developed. — Manus with the middle 

 finger very attenuated, and provided with a narrow scooped nail ; rest of 

 nails (except of thumb of pes) similar, subulate. (Daubentonioidea.) 



DAUBENTONIIDAE. (VIII.) 



SUPER-FAMILY LEMUROIDEA. 

 VI. LEMURIDAE. 



SUTB-FAMILIES. 



I. Teeth 30 ; i. e. M f P.M. § C. { I. -^2. 



INDRISHSTAE. (A.) 



II. Teeth 3(3 (exceptionally 32) ; i. e. M. f P.M. f C. } I. 2 -^x2 (exception- 

 ally, I. '} in adult). 



A. Tarsus short or of moderate length. 



