AOTUS 9 



Genl. Char. General color of head brownish gray ; lateral black 

 lines encircling the white on crown, not going to occiput ; two thirds of 

 tail black ; first upper molar largest of the series. 



Color. Forehead white divided in center by a fan shaped black 

 line, and encircled by another black line commencing at corner of 

 eyes ; space beneath eyes covered with white hairs ; head behind black 

 line brownish gray; back of neck, and upper parts of body and flanks 

 brownish gray ; flanks grizzled gray ; dorsal line darkest and reddest ; 

 outer side of limbs grizzled gray ; under parts of body and inner side of 

 limbs pale orange buff; hands and feet grizzled gray; tail above and 

 beneath orange rufous at base, remainder black. Ex type British 

 Museum. 



Measurements. Total length, 750; tail, 430; foot, 90. Skull: 

 total length, 65 ; occipito-nasal length, 60.3 ; intertemporal width, 33.5 ; 

 width of braincase, 33.6 ; Hensel, 39.2 ; zygomatic width, 36.6 ; median 

 length of nasals, 13.7; palatal length, 17; length of upper molar series, 

 15; length of mandible, 37.6; length of lower molar series, 16.9. Ex 

 type British Museum. 



In the head markings this species is similar to A. boliviensis from 

 Sara Province, Central Bolivia, but is much darker and more gray, and 

 has the tail black for the greater part of its length ; the cranial charac- 

 ters are different, and the orbits much smaller, the nasals narrower; 

 palate longer and narrower. 



AoTus EUFiPEs (Sclater). 



Nyctipithecus rufipes Sclat., Proc. Zool. Soc. Lond., 1872, p. 3, 

 pi. I; Alston, Biol. Amer. Central., I, Mamm., 1879, p. 15; 

 Forbes, Handb. Primates, I, 1894, p. 169, pi. XV. 



Actus ruHpes Elliot, Mamm. Middle Amer. and W. Indies, 

 F. C. M. Pub., VI, Pt. II, 1904, p. 726, (Actus miriquo- 

 uina), figs. 165, CXXXIX, Zool. Sen; Id. Check-L. Mamm. 

 N. Amer. Cont. and W. Indies, F. C. M. Pub., VII, 1905, p. 

 533, Zool. Ser. 



RED-FOOTED DOUROUCOULI. 



Type locality. Nicaragua? Type in British Museum. 



Geogr. Distr. Nicaragua? Central America. 



Genl. Char. Triangular white patch over each eye; ears large, 

 prominent, nearly naked ; hands and feet rufous. 



Color. Triangular white patch over each eye; three indistinct 

 black lines on head from forehead and corner of eyes to crown ; upper 

 parts of body and outer side of limbs gray, tinged with reddish on 



