238 Pysche [December 
FEMALES. 
1. Length not exceeding 4.5mm..................... subsp. minutus Emery. 
hengthmotilessithani 6 ymin ye, 2) «i, h es teptes oe roe tee oes tiene ae ee ee 2 
2. Scapes and legs covered with dense, erect hairs; length 
GN Si a hensl oye Sire roa ale ios2) sis. woe noe bet ee eta subsp. vestitus subsp. nov. 
Scapes and legs naked or with only a few scattered erect hairs; 
average) lengthimore than) Gimamiics ene fe tree eet oe eee eee 3 
3. Body dark brown above; erect hairs on the gaster very short or 
Bbsenti Ante es eee subsp. miatus Nyl. var. aphidicola Walsh. 
Body light brown or reddish; hairs on gaster very long, reclin- 
pe pine Mele VaR An Lae re ech oa eT DRL Se ne gy subsp. subumbratus Viereck. 
1. Lasius umbratus subumbratus Viereck. 
Trans. Ent. Soc. Phila. XXIX, 1902, p.'72. 9. 
Worker. Length 4-5.5 mm. 
Very similar to the typical wmbratus. Body shining and rather smooth, especially 
the clypeus and gaster. Pubescence and pilosity abundant, the former more so on 
the head and thorax than on the gaster. Erect hairs on the femora few and scat- 
tered, absent on the tibiz and scapes. Eyes small. Petiole high and much com- 
pressed anteroposteriorly, its sides and upper border rounded, the latter entire or 
with a very feeble notch. Pale yellow throughout, except the mandibles, which are 
reddish brown, with black teeth, and the articulations of the antennal funiculi 
which are fuscous or blackish. 
Female. Length 7-8.5 mm. 
Differing from the true wmbratus as follows: Color paler, being a light brown or 
reddish, with the lower surface and the legs more yellowish. Pubescence much 
longer and more abundant. Hairs on the head, thorax and abdomen very long, 
slender and reclinate; absent on the legs and scapes. In some specimens the hairs 
on the head are short and sparse. Border of the petiole bearing a fringe of long 
hairs, its upper border much less deeply notched than in the true wmbratus. Wings 
gray, with basal halves distinctly infuscated as in the other forms of the species. 
Male. Length 3.5-4.5 mm. 
Differing from the true wmbratus only in its somewhat paler color and in lacking 
erect hairs on the legs and scapes. Eyes hairy as in that form and with the man- 
dibles furnished with two larger apical and several minute basal teeth. 
This subspecies was originally and rather inadequately described 
by Viereck from two females taken at Beulah, N. M. (about 8,000 
ft.), one August 17 by Dr. H. Skinner, and one July 27 by Prof. T. 
D. A. Cockerell. These are in the type collection of the Phila. 
Acad. Nat. Sci. In my own collection the form is represented 
from the following localities: 
