1924] 
A New Bee from Oregon 
243 
A NEW BEE FROM OREGON. 
By T. D. a. Cockerell. 
University of Colorado. 
Halictoides crassipes sp. nov. 
cf. Length about 10.5 mm; black, with much long brownish- 
black hair, becoming paler on tubercles and sides of meta- 
thorax, and some white hair along hind margin of posterior 
tibiae: tegulse dark brown; wings dilute fuliginous. Closely 
related to H. maurus (Cresson), to which it exactly runs 
in my table in Ent. News, Feb. 1916, but easily separated 
thus: larger; lower margin of clypeus concave: flagellum 
considerably longer, and bright ferruginous beneath; 
second cubital cell much longer, more produced apically, 
and recei\4ng first recurrent nervure near base; wings 
browner; hind femora much more massive. The fifth 
abdominal segment presents a broad emarginate shining 
ferruginous plate. 
Albany, Oregon {Holleman; Peabody Academy). Type in 
Museum of Comparative Zoology, Harvard University. 
Halictoides is a Holarctic genus which is much better re- 
presented in North America than in the Old World. Even 
in the Old World, most of the species are Asiatic, coming 
from Turkestan, Mongolia and China. The closely allied 
Hw/oRreaMs confined to the Old World, extending from 
China to Egypt and Spain, with one species (H. calidula 
Ckll) in tropical Africa. Friese has described a species 
' from Mongolia. We may surmise that Halictoides had 
its origin in America, Dufourea in the Palaearctic region. 
In addition to the characters of venation and antennae 
cited by authors to distinguish Dufourea from Halictoides, 
the following peculiarities of the mouth-parts may be 
used to separate the type species of Halictoides from 
Dufourea. 
^Dufourea Lapeletier, 1841; not Dufouria Desvoidy, 1830. 
