July, '07] ENTOMOLOGICAL NEWS. 293 



The Bees of Nebraska. — III. 



By Myron H. Swexk. 



Family MACROPIDAE. 



Genus MACROPIS Panzer. 



1. Macropis patellata Patton. 



Meadow, Nebraska, July 14, 1906, three males collected 

 at a small white Asclepias (P. R. Jones). 



2. Macropis clypeata n. sp. 



o". — Length 7 mm. ; apparently very close to M. morsei Rob., but 

 differing from the description of that species as follows : Pubescence 

 of mesonotum pale and black intermixed, the dark hairs predominating 

 only on the disk ; only the clypeus yellow, the spots on the sides of 

 the face and on mandibles lacking; wings smoky, the nervures and 

 stigma black; tarsi wholly black; first two abdominal segments scarcely 

 depressed apically and not fasciate. 



Type — Warbonnet Canon, Sioux County, Nebraska, July 13, 

 1901, on Pentstcmon (M. Cary). $ . 



Differs at once from ciliata, patellata and steironematis in 

 the face marks and size. 



Family DUFOUREIDAE. 

 Genus HALICTOIDES Panzer. 



1. Halictoides marginatus Cresson. 



Entire State (Lincoln, West Point, Neligh, Long Pine, 

 Gordon, Bridgeport, Crawford, Glen and Warbonnet Canon), 

 flying in great abundance at the flowers of the various species 

 of Helianthus, and also on Grindclia squarrosa, Solidago rigida, 

 Convolvulus sp. and Carduus altissimus, on the three last 

 named flowers but rarely. In eastern Nebraska the season of 

 flight is from August 7 to September 18, in Sioux County 

 somewhat earlier, from June 26 to August 29. 



2. Halictoia>s maorns Cresson. 



Sioux County, Nebraska, June 13-28, at flowers of Cam- 

 panula petiolata. 



Family NOMIIDAE. 

 Genus NOMIA. Latreille. 

 1 Nomia foxii Dal la Torre. 



Lincoln, West Point and Dundy County, Nebraska, May 

 31 to July 12 at flowers of Petalostetnon violaceus. 



