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BULLETIN 99, UNITED STATES NATIONAL MUSEUM. 
Genus LASIOPYGA Illiger. 
1772. Cercopithecus Brinnicn, Zool. Fund., p. 34. (L. mona. Not Cercopithecus 
Gronovius, 1763.) 
1811. Lasiopyga ItuicER, Prodr. Syst. Mamm. et Avium, p. 68. (ZL. nictitans.) 
1815. Cebus RAFINESQUE, Anal. Nat., p.53. (ZL. nictitans. Not Cebus Erxleben, 
1777.) 
1870. Chlorocebus Gray, Cat. Monk., Lemurs and Fruit-eat. Bats Brit. Mus., 
p. 5. (L. pygerythra.) 
1897. Rhinostictus Trovressart, Cat. Mamm., vol. 1, p.17. (L. petaurista.) 
1913. Melanocebus EviioT, Rev. Primates, vol. 2, p. 296. June 15. (LZ. leu- 
campy.) 
1913. Insignicebus Exiiot, Rev. Primates, vol. 2, p. 296. June 15. (L. albo- 
gularis.) 
Four distinct groups of guenons are included in the East African 
collections. These are the ascanius group (subgenus Rhinostictus) ; 
the leucampyx group (subgenus Lasiopyga); the pygerythra group 
(subgenus Chlorocebus); and the albogularis group (subgenus Insig- 
nicebus). 
For measurements of specimens of Lasiopyga, see tables on pages 
33-35. ; 
LASIOPYGA ASCANIUS SCHMIDTI (Matschie). 
1892. Cercopithecus schmidti Marscute, Zool. Anz., 1892, p. 161. May 2. (Forest 
between Mengo and Mjongo, Uganda; type in Berlin Museum.) 
1910. Cercopithecus ascanius schmidti RoosEve.?, African Game Trails, Amer. ed., 
pp. 474 and 481; London ed., pp. 486 and 492. 
Specumens.—Four, from the following localities: 
Ucanpa: Budonga Forest, 2 (Raven); Kikandwa, 1 (Heller); 
Nabea, 1 (Raven). 
The specimen from Kikandwa (virtually a topotype) is an adult 
male, and differs from specimens of Lasiopyga ascanius kaimosie 
Heller in its shorter coat and darker gray underfur; it also has much 
smaller teeth. Its external measurements were: Head and body, 
470; tail vertebre, 780; hind foot, 140; ear, 21. Specimens from 
the Budonga Forest are inseparable. 
Heller examined the type and other specimens of this form wm 
Berlin and as the specimen measured by Elliot? as the type is evi- 
dently not considered such by Matschie, Heller’s notes as given below 
are of especial interest. 
Cercopithecus schmidti Matschie. Type, ¢, A5564. Between Mengo and Mjongo, 
Uganda (Coil. Stuhlmann). Skin mounted; in good condition. Skull perfect, old, 
cheek-teeth much worn. Matschie says this specimen is the type. Skull: greatest 
length, 100; condylo-incisive length, 78; basilar length, 65.5; zygomatic width, 65; 
post-orbital width, 41; upper cheek teeth and canine, 28; width of palate at m*, 20, 
width of braincase, 55.5; width at orbits, 52.2; length of mandible, 65.5. 
The Lasiopyga schmidti (Matschie) of Elhot has been much sub- 
divided since the publication of the ‘‘ Review of the Primates.” The 
1 Review Primates, vol. 2, p. 306. June 15, 1913. 
