CLASSIFICATION OF THE LEMUROIDEA 437 



Subfamily Galaginre 



Eecent : Africa. 



Leaping arboreal animals witli elongate calcaneiim and navicular, long 



and stout hind legs, elongate lumbar parapophyscs, and long tail. 



Femur with small third trochanter. 

 Spines of twelfth and thirteenth dorsal vertebroe directed forward. 

 Spines of cervical and first dorsal vertebrse short. 

 Skull mesocephalic. 

 Orbits directed more outward. 

 Postorbital process of malar slender. 

 Zygomata slender; proximal end of zygomatic branch of squamosal wholly 



in front of external auditory meatus. 

 Posterior nares usually behind m-. 

 Pm* submolariform or tricuspid, with two external cusps; hypocone 



present. 

 Genera : Galago. Hemigalago. 



Series tarsiifokmes 



1. Malar widely separated from lacrymal by maxillary. 



2. Orbits more or less partitioned off from temporal fossie. 



3. Lacrymal foramen in front of orbit. 

 ■i. Eostrum very narrow. 



5. Auditory bulla' of very large size, much extended anterointernally. 



6. Ectotympanic enlarged, external to bulla, forming its outci- wall ;iii(l 



continued externally into a tubular meatus. 



7. Stapedial branch of internal carotid reduced or wanting. 



8. Main branch of internal carotid traversing hulla from below. 



9. Placenta discoidal, deciduous (Tarsiida^, ). 

 10. Digit III of manus the longest. 



1\. Digit TI of luanus not reduced (Tar.siiis). 



FMiiiily ^lici'ochoeridffi (Lydekker) 



Upper Eoccnu ( ? Lower Oligoccne) Europe. 



Dental for,,,,,!. : r, ^ . c^, P^-^p. m|. 



Anterior pjiii- of upper iucisoi-s well scpai'ntrd, of ni('(|iuni size. 



Lateral upper iiu-isoi's directly lieliiml iiie<li;iii p;iii'. 



Lower iiicisoi's vestigial or aliseiit. 



Upper canines \arying in size: wholly posterioi' lo incisors. 



XXXIV — Bui,L. Gkoi,. Soc. \m.. Vol. lif>. 1014 



