lxx INTRODUCTION 



P. AGNATUS ; P. LAPSUS ; P. ALACER J P. MORDAX ; P. RESIMUS ; P. BAWE- 



anus; P. cupidus; P. pagensis; P. ling^e; P. impudens; P. kari- 



MONI ; P. BINTANGENSIS J P. DOLLMANI ; P. PUMILLUS J P. MANDIBU- 

 LARIS; P. LAUTENSIS; P. LINGUNGENSIS J P. SIRHASSENENSIS ; P. 



carimaTjE ; and P. l<etus, and those of the Philippine and Sulu islands. 



Cercocebus is an African genus exclusively confined to the 

 Ethiopian Region. In East Africa from the Tana River to Uganda 

 and the Upper Congo four species are found : C. galeritus ; C. a. john- 

 stoni; C. chrysogaster ; and C. hagenbecki; and West Africa has 

 the remaining species, six in all, ranging from Sierra Leone to the 

 Lower Congo: C. .ethiops; C. lunulatus; C. torquatus; C. ater- 

 rimus ; C. albigena ; C. a. zenkeri; and C. agilis. 



The genus Rhinostigma contains but one species, R. hamlyni, 

 from the Ituri Forest, East Africa, apparently a link between the 

 last genus and the one succeeding, and remarkable for the shape of 

 its face, (which is similar to that of a Barn-Owl), and the mark over 

 the nose from forehead to upper lip, and the small fifth cusp on the 

 last lower molar. 



The great genus Lasiopyga, containing the largest number of 

 species of all those included in the Order Primates, succeeds Rhino- 

 stigma. It is entirely confined to the Ethiopian Region, its mem- 

 bers dispersed over the African Continent save along the Mediter- 

 ranean littoral. The East African Subregion of the Ethiopian Region 

 contains forty species and subspecies, L. neglecta Schlegel, (nee 

 Auct.) ; L. griseoviridis ; L. boutourlini ; L. matschie; L. djam- 



DJAMENSIS ; L. HILGERTI ; L. STUHLMANNI J L. AURORA J L. BUDGETTI J 

 L. GRISEISTICTA J L. DOGGETTI ; L. CARRUTHERSI ; L. DENTI J L. 

 SCHMIDTI J L. THOMASI \ L. KANDTI ; L. STAIRSI J L. NEUMANNI ; L. 



callida; L. centralis; L. c. whytei; L. c. johnstoni; L. c. lutea; L. 

 kolbi ; L. k. hindei; L. k. nubilis; L. rufoviridis ; L. rubella ; L. 

 pygerythra ; L. albigularis ; L. a. kinobotensis ; L. a. ruHlata; L. 



RUFITINCTA J L. OPISTHOSTICTA ; L. LEUCAMPYX | L. MOLONEYI J L. FRAN- 

 CESCO ; L. silacea ; L. signata ; and L. princeps. In the West African 

 Subregion beginning in Senegambia is L. callitrichus ; then follow 

 going south, L. campbelli ; L. diana ; L. buttikoferi ; L. roloway ; 

 L. fantiensis ; L. burnetti ; L. mona ; L. tantalus ; L. t. alexatidrt; 

 L. insolita ; L. preussi ; L. brazzo ; L. nictitans ; L. sticticeps ; L. 

 grayi ; L. g. pallida; L. signata; L. petronello; L. sclateri ; L. 

 petaurista ; L. c. laglaizi; L. cephus ; L. cephodes ; L. martini ; L. 

 erythrotis; L. pogonias; L. p. nigripes; L. insularis; L. ascanius; 

 L. whitesidi; L. pluto ; L. cynosura; L. wolfi ; and L. insignis; 



