2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 60 



along sides of cheeks black ; rest of face clothed with short whitish 

 or yellowish hairs ; frontal roll, or ruff, narrowly edged with rusty 

 brown. 



Skull. — Similar in general form to those of B. castaneiceps and 

 B. griseus, but nasals shorter, with anterior border concave or emar- 

 ginate, the emargination deepest at median suture ; squamosal arm of 

 zygoma broader, more rounded, less acutely pointed anteriorly ; 

 palate less deeply grooved posteriorly; symphysis of mandible less 

 produced anteriorly beyond plane of first molars. 



Measurements. — Type : Total length, 641 millimeters ; tail verte- 

 bra?, 47; hind foot, 132. Skull (type) : Greatest length (occipital 

 condyle to anterior point of nasals), 78.5; zygomatic breadth, 47.5: 

 interorbital breadth, 21.8; palatal bridge, 21.5; maxillary tooth- 

 row, 25.5. 



Remarks. — This form, based on specimens from Eastern Panama 

 and the adjacent part of Colombia, differs markedly from B. casta- 

 neiceps and B. griseus, and in color pattern as well as cranial details 

 is more like some of the South American species. It appears to be 

 unlike those described, but its exact relationship to some of the South 

 American members of this unrevised genus cannot be determined at 

 present, owing to lack of knowledge of their real characters. 

 While the wide range of variation seen in a series of specimens from 

 a given locality would include many of the characters used as spe- 

 cific by Gray, this variation is shown by examination of the Middle 

 American forms to be within definite limits, and when ample material 

 is available the distinctive characters of the species will become 

 better known. 



Specimens examined. — Total number, 3, as follows : 

 Panama: Marraganti : (type), 1. 

 Colombia : Atrato River, 2. 



MAZAMA TEMA REPERTICIA, new subspecies 



Type from Gatun, Canal Zone, Panama. No. 17 1673, male adult, 

 U. S. National Museum (Biological Survey Collection), collected 

 by E. A. Goldman, June 2T, 191 i. Original number 21 178. 



General characters. — Similar to Mazama tenia tenia of Mexico, 

 but somewhat larger; color duller, much less rufescent. Similar in 

 size to M. pandora, but color decidedly darker, and skull differing 

 in various details. Differing from M. briccnii of Venezuela in larger 

 size, shorter pelage (very short on neck), and less rich rufescent 

 general coloration, the dark facial area more restricted. 



