LASIOPYGA 333 



Lasiopyga callitrichus (I. GeofFroy). 



Sitnia sabcuus (nee Linn., sed Auct.). 



Le Calliiriche F. Cuv., Hist. Nat. Mamm., Livr. IV, 1819, pi. XX. 



Cercopithecus callitrichus I. Geoffrey, Cat. Primates, 1851, p. 23; 

 Dahlb., Stud. Zool. Fam. Reg. Natur., fasc. I, 1856, pp. 104- 

 108, van b; Reichenb., Vollstand. Naturg. Affen, 1862, p. 115, 

 fig. 288; Schleg., Mus. Pays-Bas, Simise, 1876, p. 73; Sclat., 

 Proc. Zool. Soc. Lend., 1893, p. 248; Forbes, Handb. Pri- 

 mates, II, 1894, p. 58. 



Cercopithecus sabccus (nee Linn.), Pousarg., Ann. Seien., I, 1896, 

 7me Ser., p. 224; Pocock, Proe. Zool. Soc. Lond., II, 1907, p. 

 726, pi. XLII, fig. 1. 



GREEN GUESON. 



Type locality. Unknown. Type in Paris Museum? 



Geogr. Distr. Senegambia to the Niger, Yabanda, Congo, (Dy- 

 bowski) ; West Afriea. Island of St. Kitts, West Indies. (Introduced). 

 Specimen in Paris Museum. 



Genl. Char. No white brow band ; hairs on cheeks radiating from 

 a point. 



Color. Face and ears black; top of head, upper parts of body, 

 flanks, and limbs to elbows and knees yellowish green, the hairs gray at 

 base and ringed with black and yellow; forearms and legs from 

 knees gray, hairs ringed with white, or yellowish white and black; 

 cheeks, sides of neck in front of ears, chin, throat, under parts and 

 inner side of limbs white ; hands and feet blackish gray ; tail grayish 

 green for two thirds the length, the hairs brownish black ringed with 

 yellow and tipped with yellowish, remainder yellow. 



From Geoffrey's supposed type of L. callitrichus in Paris Mu- 

 seimi. 



Measurements. Total length, 1,308.1; tail, 762; foot, 152.4. 

 Skull: total length, 117; occipito-nasal length, 92; Hensel, 88; zygo- 

 matic width, 79 ; intertemporal width, 42 ; palatal length, 52 ; breadth of 

 braincase, 54 ; median length of nasals, 17 ; length of upper molar series, 

 29 ; length of mandible, 80 ; length of lower molar series, 37. 



There is a specimen in the Paris Museum collected by Dybowski, 

 at Yabanda, on the Congo, which differs from the typical L. calli- 

 trichus by having the top of head, upper parts of body, flanks and 

 limbs to elbows and knees greenish gray, with a yellow tinge instead of 

 yellowish green, and the hands and feet are brownish gray instead of 

 blackish gray. If this is a slightly varied example of L. callitrichus, 

 its range to the southward must be considerably extended. 



