Keolroju'cal Molo.-su?, Cunoj atu->, tOc. 5S1) 



Agouti sierrce, sp. n. 



Size comparatively small. Fur long and thick, as in 

 j4. Taczanoiosldi *. General colour about as in that animal, 

 dark brown, near " seal-brown,'* but less purple. White 

 spots large, subcqual, not coalesced into lines, disposed, 

 though rather irregularly, in three rows, of which the most 

 superior approach within an inch of each other on the withers 

 and are about 4 inches apart on the back, where the space is 

 partly filled up bj a few extra spots. This Paca is therefore 

 one of the most heavily and evenly spotted of the group. 

 -Belly-hairs whitish, washed terminally with pale brown, not 

 sliai))ly demarcated laterally. Top of head blackish brown, 

 without ^spots ; cheeks paler brown, more or less grizzled with 

 whitish; lips and throat dull whitish; a brown chin-spot 

 present. Ears brown, with some whitish hairs at their ante- 

 lior base. Limbs brown like the sides, their inner surfcices 

 sct.rcely lighter ; upper surtace of hands and feet of a reddish 

 brown, quite different to the blackish brown of the general 

 colour, .something between " umber'" and " Front's brown'' ; 

 f^ole-pads profusely granulated, except just under the heel. 

 Mamrafp 1 — 1 = 4. 



Skull conspicuously smaller than in paca and Taczan- 

 ouskii, the surface almost quite smooth (but the type is a 

 female). Zygomatic concavities small. Postpalatal region 

 of skull proportionally short, the postpalatul length less than 

 the distance fiom the back of the palate to the maxillary 

 suture. Teeth large, the length of the molar series con- 

 spicuously greater than the maxillary part of the diastema. 

 Bulls very low and small, little inflated, their antero-posterior 

 length barely 14 mm., as compared to 16-17 in the allied 

 forms. 



Limensions of the type (measured on skin) : — 

 Head and body 650 mm.; hind foot, s. u. 84, c. u. 94. 

 Skull : greatest length 123 ; basilar length 99 ; zygo- 

 niatic breadth 82 ; nasals 41 x i'l'D ; interorbital breadth 35; 

 tip to tip of ];ostorbital processes 49; least breadth above 

 auditory meatus 37-5 ; greatest posterior breadth 47'5 ; 

 Of cij.ital height from basion 28-7 ; length of broadened surface 

 of z\ gonia 64 ; greatest height of zygoma 30 ; zygomatic 

 concavity, measured internally in horizontal plane, 34 x 18 ; 

 diastema 38 ; postpalatal length 38 ; length of upper tooth- 

 row (crowns) 28. 



Bah. Pedregosa ]\lontiihas. Sierra de IMerida, Venezuela. 

 Alt. 2001) m. ' 



« J^tolzmaiin, I'. Z, S. IbSr), \\ I'jl- 



