l<ti SAIMIRI. CEBUS. 



Type locality. Santa Efigenia, State of Oaxaca, Mexico. 



Genl. Char. Differs from .-1. pan, in its lighter upper back and 

 shoulders; in the yellowish buff rump and flanks, buffy throat, and 

 yellowish buff stripe on under side of tail. Skull like .4. pan; upper 

 and middle incisor teeth larger. 



Color. Forehead, crown and nape black; sides of head mixed buff 

 and black; upperpart of back with long hairs dark bistre; lower ba.ck, 

 rump, flanks and hips yellowish buff; chin buff and black; throat and 

 undcrparts pale yellowish buff; upper arms brownish black; forearms 

 black; outer side of thighs clay-color, passing through brow to black 

 above knee; rest of leg to foot black; inner side of legs yellowish buff; 

 tail above at base blackish brown becoming black at tip, beneath a 

 stripe of yellowish buff from root for one-third the length, rest black; 

 hands and feet black. Type in United States National Museum. 



Measurements. Total length, 1150; tail, 710. Skull: Total length, 

 109; occipito-nasal length, 95.6; zygomatic width, 64.1; palatal 

 length, 31.9; breadth of braincase, 54.8; length of upper molar 

 series, 25.4; length of mandible, 63.4; length of lower molar scries, 

 27.2. Type in United States National Museum. 



Genus Saimiri (219). 



Saimiri oerstedi citrinellus Thomas = S. oerstedi. 



Saimiri cerstedi citrinellus Thos., Ann. and Mag. Nat. Hist., 7th 

 Scr., XIII, 1904, p. 250. 



Type locality. Pozo Azul, Pirris, Costa Rica. 



Genl. Char. Head less blackened, limbs less yellow. 



Color. Back orange; shoulder blades grayish; belly yellowish 

 white; groin and inner side of thighs whitish; crow r n of head gray 

 with tips of hairs blackish; arms to wrists, and legs from thighs griz- 

 zled grayish tinged with yellowish; hands paler orange than in S. 

 oerstedi; feet edged with orange, middle of metatarsus grizzled grayish 

 as is also the proximal end of tail. 



Measurements. Total length, 765; tail, 415; hind foot, 90. 

 Skull: Greatest length, 651; breadth of braincase, 36. 



Genus Cebus (221). 



i 



Cebus capucinus limitaneus Hollistrr. 



Cebus capucinus limilancus Hollister, Proc. Biol. Soc. Wash., XXVII, 



1914, p. 105. 

 Type locality. Segovia River, eastern Honduras. 



