Oct., 1916. Mammats, Cottrns-Day Expepition —Oscoop. 201 
Lama glama huanachus Molina. GUANACO. 
Six specimens, Pampa de Arrieros, Peru. 
Well-preserved skins and skulls of three male and two female 
guanacos and one complete skeleton are in the collection. The herds 
from which they were obtained are almost if not quite the northernmost 
now existing and the specimens will be of great interest in determining 
the geographic variation in the species. This cannot well be attempted 
until specimens are secured from central Chile, the type locality of 
Molina’s huanachus. It is evident, however, that the Peruvian gua- 
nacos of this collection are not closely related to the “‘small Peruvian 
guanaco”’ to which Lénnberg has given the name Lama glama cacsiloensts 
and which shows great similarity, at least in certain cranial characters, 
to the vicugna. In size our specimens are only slightly smaller than 
the Patagonian guanaco. A skull of an adult male measures as follows: 
Total length 290 (307)*; basal length 277 (290); greatest width 148 
(146); least postorbital width 61.5 (64); length of three upper molars 
59 (63); width across middle of second upper molar 69 (75); greatest 
length of nasal laterally 63 (78). 
Measurements of an adult male, taken in the flesh by the collector, 
are as follows: Length “from between ears to root of tail’ 1300; cir- 
cumference of upper neck 330; of lower neck in front of shoulder 550; 
girth behind foreleg 1080; girth at middle of belly 1160; girth at loin 
860; base of ear to point of shoulder 650. 
Lama vicugna Molina. VICUGNA. 
Four specimens, Pampa de Arrieros, Peru. 
These consist of skins and skulls of two males and one female and 
skeleton of one male. So far as recorded, they are the only first class 
specimens of this species ever brought to a North American museum.f 
This is perhaps on account of the poverty of North American museums 
in South American material rather than because of the rarity of the 
animal; but it is evident that the vicugna is not easy to procure even 
in those localities where it is still common. 
Measurements of an adult male, taken in the flesh by the collector, 
are as follows: Length “‘from between ears to root of tail” 1250; base 
of ear to point of shoulder 670; circumference of upper neck 260; of 
lower neck in front of shoulder 430; girth behind foreleg 840; girth at 
middle of belly 960; girth at loin 750. 
*Measurements in parentheses are those of a Patagonian guanaco published 
by Lénnberg. (Archiv. fér Zoologi, VIII, No. 19, p. 2, 1913). ’ 
{The specimen recorded as Lama vicugna by Elliot (Cat. Mamm. Field Mus., p. 
37; 1907) proves to belong to another species. 
