oy 
Specific Characters in the Bee Genus Colletes 19 
braska it flies during the summer and early autumn, commencing 
to appear in middle June from when it may be found commonly 
until middle September, the 22d of that month being the latest 
date I have found it. In the earlier part of its season of flight 
(during July) it occasionally visits such flowers as Symphoric- 
arpos occidentalis, Ceanothus americana, and Melilotus alba,‘and 
in the latter portion (middle and latter September) it is common 
on Solidago rigida, but by far the most preferred food plants are 
the several species of Physalis, upon which it is common through- 
out their season. 
SPECIMENS ExXAMINED—Colorado: Colorado Springs, 1; Dis- 
trict of Columbia: Washington, 1; Illinois: Carlinville, 2; Kan- 
sas: Baldwin, 8; Dickinson county, 2; Clay county, 1; Wellsville, 
1; Nebraska: Lincoln, 13; West Point, 2; Nebraska City, 2; Glen, 
1; Warbonnet Canyon, 1; Virginia: Falls Church, 1. 
Colletes banski n. sp. 
. Length 11 mm. Resembling C. Jatitarsis but differing from that spe- 
cies as follows: Pubescence paler, the black thoracic hairs practically 
confined to a few on the sides of the scutellum; clypeus with coarse but 
well-separated punctures, striate only marginally, broadly sulcate me- 
dially, subimpunctate on apical margin; malar space much longer, about 
one-half as long as broad; mesothorax with sparse strong punctures, 
sparser on a large disk, scutellum with a basal impunctate line, closely 
punctured posteriorly; neck of enclosure shorter and broader; nervures 
and stigma paler, brownish; basal joint of hind tarsi about three times 
as long as wide; segment 1 of abdomen finely but closely punctured. 
6. Unknown. 
Type Locatiry. 
the author. 
Falls Church, Virginia; type in collection of 
Though closely related to latitarsis, this species is much more 
distinct from it than either crawfordi or chamaesarachae, and is 
easily distinguished from any of the three by the longer malar 
space. The unique type was collected July 4 by Mr. Nathan 
Banks in whose honor I have named the species. 
SPECIMENS EXAMINED— Virginia : Falls Church, 1. 
sy 61 
