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Bunetin Wisconsin Natural History Society. [Vol. 5, No. 2. 
reticulate and not longitudinal, those on the thorax somewhat reticu- 
late above, but longitudinal on the sides, even of the pronotum. 
Petiole and postpetiole sharply and longitudinally sulcate, the node of 
the latter sometimes more finely and irregularly rugose or more or 
less punctate. Hairs yellow, acute, rather short and moderately 
abundant. Head and gaster black ; thorax, petiole and postpetiole 
deep red or, in some colonies, almost black ; mandibles, antennae and 
legs of a somewhat lighter red. 
Female. Length 6 — 6.5 mm. Eesembling the worker. Spines as 
long as the base of the epinotum, straight, rapidly tapering and blunt 
at their tips. In some specimens the thorax is entirely black, like the 
head and gaster, and there is a black spot on each node of the pedicel ; 
in others the thorax is deep red, with the mesopleurse, metanotum, 
posterior border of scutellum and the mesonotum, except for a pair of 
small red anterior and a larger posteromedian spot, black. Wings 
distinctly brown at the base, with light brown veins and stigma. 
Male. Length 5.5 — 6 mm. Scapes very short and straig'ht, only 
about 1/(3 as long as the funiculus and as long- as its two basal joints. 
Club distinctly 5-jointed. Hairs yellow, long and abundant, especially 
on the legs. Body and appendages black; antennal chibs dark red, 
tarsi dark brown, articiilations of legs yellowish. Wings like those 
of the female. 
Utah: (Emery). 
Colorado : Florissant, 8,000-9,000 feet ; Cheyenne Canon, 
5,990 feet (Wheeler) ; Westcliffe, 7,849 feet, and Boulder, 5,347 
feet (P. J. Schmitt) ; Ward, 9,000 feet, and Half-way House, 
Pike's Peak (T. D. A. Cockerell). 
New Mexico: Top of Las Vegas Range, it, 000 feet; Har- 
vey's Ranch, Las Vegas Range, 9,600 feet; Beulah, 8,000 feet; 
(T. D. A. Cockerell), Beatty's Cabin, Upper Pecos Valley (Mrs. 
W. P. Cockerell). 
5. Var. canadensis var. nov. 
Worker. Length 4 — 5 mm. Differs from the variety sulcinodoides 
in its somewhat smaller size and in the coloration, which is yellowish 
brown, with the upper surface of the head and the gaster, except at 
the base and tip, dark brown or blackish. The sculpture on the head 
is somewhat weaker, the hairs on the body slender and pointed. 
