INTRODUCTION Ixxi 



thirty-five in all. The South African Subregion has L. albigularis ; L. 

 rufoviridis ; L. a. beirensis; L. s. mosambicus; L. pygerythra ; and L. 

 labiata ; six species. Eight remain whose habitat is entirely unknown, 

 L. i/hoesti ; L. nigriviridis ; L. inobservata ; L. werneri ; L. nigri- 

 gensis ; L. erythrogaster ; L. temmincki and L. albitorquata. 



Miopithecus follows Lasiopyga ; indeed up to the present time 

 its species were always included in the last genus. It has only two 

 members, both natives of the East African Subregion of the Ethiopian 

 Region, their range extending from Southern Cameroon to, and 

 including, Angola. They are M. talapoin and M. ansorgei. 



Erythrocebus contains the long-legged reddish colored Guenons, 

 heretofore included in Lasiopyga. They are inhabitants of the 

 Ethiopian Region, six being dwellers of the East African Subregion, 



E. PYRRHONOTUS ; E. POLIOPH^EUS J E. ALBIGENIS ; E. FORMOSUS ; E. 



whytei; and E. baumstarki. Five are inhabitants of the West 

 African Subregion, E. patas ; E. kerstingi ; E. zecki ; E. langeldi ; 

 and E. sannio. The locality of one species, E. circumcinctus, is 

 unknown. 



We now come to Pygathrix one of the largest genera of the 

 ANTHROPOIDEA. Its members are natives of the Palsearctic and 

 Oriental Regions. Two species only are found in the first of these, P. 

 schistaceus and P. lania. In the Indian Subregion of the Oriental 

 Region is found but one species, P. entellus. In the Ceylonese Sub- 

 region seven species are met with: P. cephaloloptera ; P. c. monti- 

 cola; P. senex ; P. johni ; P. ursina ; P. hypoleuca ; and P. priamus. 

 In the Indo-Chinese Subregion of this Region are found eight species : 

 P. pileata; P. franqoisi; P. crepuscula; P. c. wroughtoni; P. Mar- 

 garita ; P. germaini ; P. nem^eus ; and P. nigripes. The Indo- 

 Malayan Subregion contains the remaining species : P. melanolopha ; 



P. NOBILIS ; P. RUBICUNDA J P. CARIMATVE J P. FRONTATA J P. HOSEI ; P. 

 THOMASi; P. POTENZIANi; P. AURATA J P. CRISTATA J P. C. pulldta; P. 



ultima; P. albipes; P. nudifrons; P. cruciger; P. chrysomelas; 



P. SUMATRANA ; P. BATUANA ; P. PERCURA ; P. FEMORALIS J P. MELA- 

 MERA ; P. BARBEI ; P. PHAYREI ; P. FLAVICAUDA ; P. ROBINSONI J P. 

 OBSCURA ; P. CARBO J P. SANCTORUM ; P. NUBIGENA J P. DILECTA J P. 



natun,e; P. rhionis; P. cana; P. siamensis; P. catemana; P. 

 aygula; P. fusco-murina ; P. sabana; and P. everetti. P. holo- 

 tophrea is the only one whose locality is unknown. 



Rhinopithecus is a small genus with four known species, belong- 

 ing to the Siberian and Manchurian Subregions of the Palaearctic 



