46 Unii'crsity of Michigan 



don. in jjatches of tall ve.^etation along the roadsides and in 

 (le])ressions on the uplands, and in cultivated fields. It seemed 

 to be somewhat less common in the southwest than in other 

 parts of North Dakota. 



All of the specimens of the very large series collected are 

 (jf the typical bivitfatiis type, and not a single example of the 

 red-legged fcinoratns was seen among the thousands of speci- 

 mens observed in the field. However, it seems more likely 

 that this difference in tibial coloration is in the nature of a 

 response to local environmental conditions, such as food, 

 humidity, etc., than that it is a genetic character of racial or 

 varietal significance. The tibiae of these North Dakota speci- 

 mens are usually at least in jiart yellow, and are almost always 

 infuscated to a greater or less degree; but many of the speci- 

 mens have bluish, l^rownish, purplish, or black tibiae, and in 

 several specimens at hand they are dark yellow or brown, with 

 the outer face faintly Hushed with deep red. 



Phoctaliotes nebrasccnsis (Thomas j.- — Devils Lake, Aug. 

 26, 1919, I male, i female; Amidon, Aug. 22-28, 1920, 3 

 males, 7 females. 



Although this species was taken in only two localities, it 

 is probably widely distributed and fairly common within the 

 state. A single pair was taken on the grassy slopes of Sully's, 

 Hill on the south shore of Devils Lake. At Amidon it was 

 found on a number of occasions in patches of tall weeds or 

 clumps of low bushes in depressions on the uplands and in 

 the '"breaks" of the Bad Lands, sometimes on Artemisia in 

 company with Hypochlora alba. 



