1 6 Myron Harm-on Swenk 



1914, on Solidago rigida (O. A. Stevens, No. 7027), i J*; 

 Schafer, North Dakota, September 5, 1914, on Grindelia squar- 

 rosa (O. A. Stevens, No. 8538), i $; Detroit, Minnesota, August 

 25, 1913, on Aster sagittifolhis (O. A. Stevens, No. 6578), i $. 

 The two females from Mitchell, Nebraska, and the female from 

 Schafer, North Dakota, have the mesoscutum red with a median 

 black band and the ground color of the mesopleura red or 

 mostly so. 

 Nomada (Heminomada) zebrata Cresson, var. 



A pair from Oak Creek Canyon, Arizona, 6,000 feet, August 

 (F. H. Snow, 1883, 1884), are apparently referable here. The 

 J*, however, has the apex entire; the legs yellow with merely a 

 trace of reddish suffusion on the femora ; the abdominal bands 

 very broad ; no red color on the head, and only the edgings of 

 the mesopleural spot and four faint mesoscutal lines red on the 

 thorax. The 5 has the face wholly red ; the first four tarsi and 

 stripes on the outer faces of the tibiae, as well as the knees and 

 spots on the coxae, yellow; the band on tergite i broad and 

 complete ; and a broad median mesoscutal band and the enclosure 

 black. I at first thought these might constitute a new subspecies, 

 but suspect that a good series will show the same variations to 

 occur in Colorado and Kansas, where the cotypes of zebrata were 

 collected. N. coloradensis Ckll. 5, though allied, seems quite 

 distinct. 

 Nomada (Holonomada) adducta Cresson. 



I am now convinced that A'', adducta reposes better in Holo- 

 nomada than in Nomada sens, str., and that it is related to vincta 

 and zebrata through asteris. The apex varies from slightly 

 notched to entire, while joint 3 distinctly exceeds 4 and the scape 

 is swollen in the J*, just as in zebrata (^. The female is a wholly 

 red and black Holonomada. Aside from the Colorado type, this 

 species has previously been recorded only from Lincoln, Ne- 

 braska. Mr. L. T. Williams took a female at Omaha, Nebraska, 

 August 25, 1 91 4, which agrees exactly with the allotype. Two 

 females from Phillips county, Kansas, 1940 feet, August 30, 1912 

 (F. X. WilHams), agree with the allotype and other Nebraska 



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