CLASSIFICATION OF VERTEBRATA 53 



Fossil Lemurs since the Eocene : Adapis (Caenopithecus), 

 ? Necrolenrur (Microchoerus), Plesiadapis, of Europe : Pelycodus 

 (Lemuravus), etc., Wyoming. Now palaeotropical. 



Lemuridae, * ^ * \ V |^| | 



Indris, Propithecus, Lemur, Chirogale. Madagascar. 



Galago. African continent. 



Loris, Nycticebus. Further India, Sumatra, Java, Borneo. 



Perodicticus. West Africa. 

 Chiromyidae. i^c^p^m^. Chiromys. Madagascar. 



2. Sub-order TAESII. Orbit to a great extent separated 

 from the temporal fossa. Lacrymal foramen outside the orbit. 

 Allantois small. Placenta discoidal, deciduous. 



Tarsiidae. i^-c^-p^m^. 



Tarsius spectrum. Malay Islands and Philippines. 



Allied is probably Anaptomorphus from the Eocene of 

 Wyoming and Argentina, with only two premolars, but with 

 still wide temporo-orbital communication. 



3. Sub -order SIMIAE, v. d. Hoeven. Orbit completely 

 separated from the temporal fossa by an inward extension 

 of frontal and malar meeting the alisphenoid. 



Mammae pectoral. Testes scrotal. Penis pendent. 

 Placenta discoidal, deciduous. Hallux opposable. 

 PLATYRHINAE. Pm 4, m 4- Parietal and malar in con- 



o ' o 



tact, separating the frontal from the alisphenoid. 



Pollex opposable. Broad internarial septum. 



External auditory meatus not bony. Tail mostly prehensile. 



Cebidae. Tropical America. Mycetes, Nyctipithecus, 

 Cebus, etc. Since the Plistocene of S. America. 



ARCTOPITHECI. Pm |-, m -|. Parietal and malar in contact. 



Platyrhine. Pollex not opposable. 



Tail not prehensile. External auditory meatus not bony. 



Hapalidae. Tropical South America : Hapale. 



CATARHINAE. Pm -|, m -|. Frontal and alisphenoid in 

 contact, separating the parietal from the malar. 



Internarial septum narrow, nostrils looking forwards. 

 External auditory meatus bony. 



Tail not prehensile. 



Cercopithecidae. With a tail, excluding Macacus inuus. 

 Africa and Asia. 



