148 BULLETIN 99, UNITED STATES NATIONAL MUSEUM. 
Puate 5. 
Skull of type-specimen of Papio anubis lestes Heller. Adult male; Cat. No. 164633. 
One-half natural size. (=Papio lestes.) 
Puate 6. 
Skull of type-specimen of Erythrocebus whitei Hollister. Adult male; Cat. No. 
155340. Two-thirds natural size. 
PLATE 7. 
Skull of type-specimen of Lasiopyga ascanius kaimose Heller. Adult male; Cat. 
No. 182371. Two-thirds natural size. 
Puate 8. 
Skull of type-specimen of Lasiopyga leucampyx maux Heller. Adult male; Cat- 
No. 173002. Two-thirds natural size. 
PLATE 9. 
Skull of type-specimen of Lasiopyga pygerythra tumbili Heller. Adult male; Cat. 
No. 182229. Two-thirds natural size. 
Puate 10. 
Skull of type-specimen of Lastopyga pygerythra contigua Hollister. Adult male; 
Cat. No. 163327. Two-thirds natural size. 
PLATE 11. 
Skull of type-specimen of Lasiopyga pygerythra callida Hollister. Adult male; Cat. 
No. 162843. Two-thirds natural size. 
PLatTe 12. 
Skull of type-specimen of Cercopithecus centralis luteus Elliott. Young adult female; 
Cat. No. 163086. Two-thirds natural size. (=Lasiopyga pygerythra rubella Elliot.) 
PLateE 13. 
Skull of type-specimen of Lasiopyga pygerythra arenaria Heller. Adult male; Cat. 
No. 182201. Two-thirds natural size. 
PLATE 14. 
Skull of type-specimen of Lasiopyga albogularis kima Heller. Adult male; Cat. 
No. 182242. Two-thirds natural size. 
Puate 15. 
Skull of type-specimen of Lasiopyga albogularis maritima Heller. Adult female; 
Cat. No. 182272. Two-thirds natural size. 
PLATE 16. 
Skull of type-specimen of Colobus abyssinicus percivali Heller. Adult male; Cat. 
No. 182138. Two-thirds natural size. (=Colobus caudatus percivali.) 
PLATE 17. 
Skull of type-specimen of Colobus abyssinicus terrestris Heller. Adult female; Cat. 
No. 164756. Two-thirds natural size. (=Colobus occidentalis terrestris.) 
