from “Otro Cerro,” North-eastern Rioja. 491 
fossa 8°5; maxillary tooth-row 22°5; length of pt 7:2; m', 
greatest antero-posterior length * 8-0, transverse breadth* 8°2. 
Type. Adult male (basilar suture closed, but teeth not much 
worn and erest not developed). B.M. no. 19. 2.7.1. 
Original number 334. Collected 21st August, 1918. 
This handsome animal, which I have much pleasure in 
naming after Sr. Budin in recognition of the excellent work 
he has done, is readily distinguishable from all hitherto 
described South-American species by its conspicuous white 
tail and the proportions of its skull and teeth. C. tropicalis 
trichurus, Thos., from Panama, also has a white tail, but is 
larger and is otherwise wholly different. 
In the present collection there are three specimens of this 
genus—one larger with large teeth, and two smaller with 
very small molars,—but all with white tails, and it was 
natural to assume that the two smaller were females and the 
larger one a male. On investigation, however, not only of 
Sr. Budin’s labels, but of the skins themselves, damped and 
pliable, I find that all are certainly males, and are therefore 
clearly not of the same species. Consequently I am com- 
pelled further to describe 
2. Conepatus calurus, sp. n. 
6. 330, 361. 
A white-tailed skunk with narrower skull and smaller 
molars than in C. budini. 
Size slightly less than in C, budini, but still exceeding 
that of C. proteus. Fur long and thick. Hairs of nape 
either reversed or with an inclination to have twisted whorls. 
General pattern of colour much more white than in budin?, 
for instead of two comparatively narrow white stripes running 
down the black back, the whole nape and back hed be said 
to be white, with merely a narrow black line (4 to 3 inch in 
breadth, attaining 2 inch on the loins) along its centte, this 
line altogether failing in some parts. Posteriorly the white 
narrows, but is continuous with that of the tail. ‘Tail bushy, 
white, with a few black hairs intermixed. 
Skull about as long as that of C. budint, but narrower in 
proportion, the mastoid breadth, in a specimen with sagittal 
crest and worn teeth, disproportionately less than in that 
animal. Mesopterygoid fossa narrow. 
* In describing C. ajax (Ann. & Mag. Nat, Hist. (8) xi. p. 187, 1913) 
the diagonal measures of this tooth were given, and one of these was 
misprinted 9 instead of 6:9. The above measurements are sounder, if 
less easy to take, and in the type of C. ajax are 8'3 and 7:0 respectively. 
