LASIOPYGA 275 



GENUS VIII. LASIOPYGA. THE GUENONS. 



1- 2— 2> ^- 1—1) "• S— a! ^' 3_3"— 32- 



♦LASIOPYGA Illig., Prodr. Syst. Mamm. et Avium, 1811, p. 68. 



Type Simla nictitans Linnaeus. 

 Cebus Rafin., Analyse de la Nature, 1815, p. 53, (nee Erxl.). 

 Monkhus Oken, Lehrb. Naturg., 3te Theil, Zool., 2te Abeth., 1816, 



pp. XI, 1208-1211. 

 ^thiops Martin, Gen. Introd. Nat. Hist. Mammif. Anim., 1841, 



p. 506. 

 Petaurista Reichenb., Vollstand. Naturg. Affen, 1862, p. 105, pi. 



XVIII, figs. 251-261, (nee Link, 1795, Glires; nee Desmarest, 



1820, Marsupialia). 

 Diademia Reichenb., Vollstand. Naturg. Affen, 1862, p. 109, pis. 



XVIII, XIX, figs. 262-270, (nee Schumacher, 1817, Crus- 

 tacea). 



Mona Reichenb., Vollstand. Naturg. Affen, 1862, p. 109, pis. 



XIX, XX, figs. 271-282. 



Chlorocebus Gray, Cat. Monkeys, Lemurs and Fruit-eating Bats, 



Brit. Mus., 1870, p. 24. 

 Cynocebus Gray, Cat. Monkeys, Lemurs and Fruit-eating Bats, 



Brit. Mus., 1870, p. 27. 

 Diana Trouess., Rev. Mag. Zool., VI, 3me Ser., 1878, p. 124, (nee 



Risso, Pisces, 1826). 

 Rhinostictus Trouess., Cat. Mamm. Viv. et Foss., I, 1897, p. 17. 

 Otopithecus Trouess., Cat. Mamm. Viv. et Foss., I, 1897, p. 20. 

 Pogonocebus Trouess., Cat. Mamm. Viv. et Foss., Suppl., Pt. I, 



1904, p. 14. 



Body slender; legs and tail long; head round, face short; cheek 

 pouches large; nose moderate, nostrils approximate; whiskers and 

 beard usually present ; callosities moderate ; hands elongate, fingers 

 webbed at base, thumb small. Skull flat, superciliary ridge much less 

 prominent than in the species of Pithecus ; orbits approximate ; pos- 



*Lasiopyga had two species of different genera Simia nem^us Linn., and 

 Simia nictitans Linn. In 1812, a year after Illiger proposed it, E. Geoffroy 

 took NEM.EUS as the type of his genus Pvgathrix, thus antedating Presbytis 

 Escholtz, by nine years, and leaving nictitans as the type of Lasiopyga. 



