52 GAL AGO 



of eastern and central African species, in Natal we have G. garnetti, 

 the most southern member of the genus. 



On the western side of the continent, the most northern species 

 is G. SENEGALENSis from Senegal south to Angola ; at Yola, Nigeria, 

 G. PUPULUS has been obtained, and from Cameroon, we have G. 



CAMERONENSIS, G. ELEGANTULUS, G. e. palHduS, and G. ALLENI ; G. 



elegantulus tonsor was procured on the Benito River, Guinea. In 

 Equatorial Africa from the mountains, near the Equator, exact lo- 

 cality unknown, G. e. apicalis was procured by Du Chaillu ; and at 

 Mombuttu, H. demidoffi was obtained by Emin Pasha. On the Gold 

 Coast H. DEMIDOFFI is found ranging south to Gaboon in French 

 Congo, where also G. allexi and G. a. gabonensis are met with, and 

 on the banks of the Kemo River in the same Province, G. a. batesi and 

 H. ANOMURUS were procured. From Cuio Bay south of Loando. 

 Angola, Portuguese West Africa, G. monteiri, one of the larger mem- 

 bers of the genus, was obtained. On Fernando Po, an island in the 

 Bight of Biafifra, Gulf of Guinea, three species dwell, G. alleni, G. 

 elegantulus pallidus, and H. demidoffi poensis. 



KEY TO THE SPECIES AND SUBSPECIES. 



A. Second upper premolar, without cusp on heel. 



a. Size large ; occipito-nasal length of skull above 50 mm. 

 a.' Ears large. 



a." End of tail not white. 



a."' Above and on flanks russet, occipito- 

 nasal length of skull 75 



mm G. crassicaudatus. 



b.'" Above mixed broccoli brown and 

 gray, occipito-nasal length of 



skull 70 mm G. culuensis. 



c!" Above light yellowish brown, occip- 

 ito-nasal length of skull 64 



mm C. panganiensxs. 



d.'" Above russet ; flanks grayish brown ; 

 occipito-nasal length of skull 



59 mm G. gantetti. 



e!" Above bright chestnut G. badius. 



f."' Above gray. 



a."" No brown on upper parts. . . .G. monteiri. 



