1872.] MR. P. L. SCLATER ON AMERICAN QUADRUMANA. 3 



These are, so far as I am yet acquainted with them, the follow- 

 ing:— 



1. Saimiris entomophaga (D'Orb.); Is. Geoffr. Cat. Mann. 

 p. 38. 



Saimaris sciurea, Sclater, P. Z. S. 1856, p. 139. 



Chrysothrix sciurea, v. Frantzius, Wiegm. Arch. f. Nat. 1869, i. 

 p. 260. 



In 1856 T recorded the existence of a species of Squirrel Monkey 

 in Central America, Mr. Bridges having procured, near David in 

 Veragua, a skeleton of a species of this genus. Dr. v. Frantzius informs 

 us that a Saimaris occurs in the warmer regions of Costa Rica, and 

 refers the species to S. sciurea. But I have no doubt that the Central- 

 American form is the black-headed S. entomophaga, as there is a 

 skin of this species in the British Museum from Veragua (Arce), 

 and likewise a specimen of the same animal obtained by Capt. Kellett 

 and Commander Wood during their survey of the Pacific coast of 

 Central America. 



2. Nyctipithecus lemurinus, Is. GeofFr. 



In a collection recently formed in the highlands of Costa Rica by 

 Dr. van Patten is a skin of this Nyctipithecus, which agrees in 

 every respect with a skin of the same animal from Bogota ; so that 

 this Columbian form evidently ranges thus far north. 



3. Nyctipithecus rufipes, sp. nov. (Plate I.) 



On the 12th of June last we purchased a living specimen of a 

 Nyctipithecus, which had been obtained at San Juan del Norte, 

 Nicaragua. Not being able to examine this animal carefully whilst 

 alive, I registered it as N. lemurinus, believing that that species was 

 the most likely to occur so far north. It is since dead, and I now 

 exhibit its skin and skull. 



The animal is certainly not N. lemurinus, but belongs to the short- 

 haired and cylindrical-tailed section of the genus containing N. tri- 

 virgatus and its allies N. felinus and N. oseryi. It appears, however, 

 as might have been expected from its locality, to be distinct from 

 all of these, and to belong to an undescribed species which I propose 

 to call 



Nyctipithecus rufipes, sp. nov. 



Supra cinereus, rufescente partim irroratus : subtus rufescenti- 

 canus : tceniis verticis tribus indistincte nigris : manibus pedibus 

 et caudce dimidio basalt rufis : hujus apice rufescenti-nigro : 

 auribus prominentibus nudis : long, tota corp. 11, caudce 16. 

 Hab. Nicaragua. 



In the form of the stripes on the head this species seems to agree 

 best with N. trivirgatus ; but the long castaneous patch on the back 

 of that species is wholly wanting in N. rufipes. Moreover the head- 

 stripes are narrower and much less distinct, and leave a prominent 

 triangular white patch over each eye. The rufous bauds and feet 



