26 PROCEEDINGS OF THE NATIONAL MUSEUM you. 97 
Measurements of the holotype (in millimeters)—Head and body, 
224; tail, 228; hind foot, 55; condylobasal length, 51.3; zygomatic 
breadth, 32.2; length of nasals, 17.1; supraorbital constriction, 17.9; 
postorbital width, 17.6; width of braincase, 22.3; alveolar length of 
molar row, 9.8. 
Coloration.—The topotype, a female, is much like the holotype in 
coloration. It is in old pelage (new in the holotype), shows a broader 
median dorsal band and a less complicated pattern on undersurface 
of tail. A male from Encontrados (just below the confluence of the 
Rios Zulia and Catatumbo) patterned like the holotype but shows 
more black on dorsum and deeper red (mars orange) on shoulder 
regions, limbs and underparts; tail above, black basally, orange 
medially, terminal third black, beneath black, with a slight mixture 
of orange medially and basally. 
Remarks.—It appears that maracaibensis occupies the whole of the 
lowlands of the Lake Maracaibo Basin. It has been shown that it 
intergrades with peryae in the northern foothills of the Sierra de Perij&. 
Similarly, it is shown that it intergrades with representatives of tarrae 
(nomen novum) and zuliae. 
Specumens examined.—Three. El Panorama, Rio Aurare, Zulia, 2 
(C.N.H.M.); Encontrados, Zulia, 1 (C.N.H.M.). 
SCIURUS GRANATENSIS TARRAE, new subspecies 
Holotype.—Adult female, skin and skull, U.S.N.M. No. 279964; 
collected July 25, 1943, by Philip Hershkovitz; original No. 2260. 
Type locality.—Rio Tarra, a small tributary of the upper Catatumbo, 
San Calixto, Department of Norte de Santander, Colombia; altitude 
about 200 meters. 
Distribution.—In the southeastern portion of the Sierra de Perij4, 
the upper Rio Catatumbo drainage area, west through low passes 
(to 1,000 meters) to the Rio del Carmen drainage system on the western 
slope; altitudinal range from about 200 meters above sea level on the 
eastern side of the mountains to about 500 meters on the western side. 
Characters.—Darkest of the northern Colombian and Venezuelan 
races; more uniformly dark agouti, with deeper red underparts and 
tail than zuliae and maracaibensis. 
Coloration of holotype.—Dorsal surface from back of head to basal 
fourth of tail both above and below, black ticked with xanthine orange; 
sides of body and limbs more orange, the orangeous subterminal band 
of the hairs paler posteriorly than anteriorly; rostrum evenly mixed 
black and orangeous, sides of face paler, chin ochraceous. Underparts 
reddish, with xanthine orange on neck, orange-rufous on fore and hind 
limbs and sides of chest and belly grading to mars orange midventrally. 
Middle half of tail burnt sienna above, grizzled with burnt sienna, 
black and yellowish beneath; terminal fourth black both above and 
below. 
