14 Myron Harmon Swenk 



1^7. Anthidiuni tenuiflorae Cockerell, Univ. of Colorado Studies, IV, 

 pp. 249-250, ? c?. 



A single female from Warbonnet canyon, Sioux county, Ne- 

 braska, collected on Astragalus hypoglottis, May 28, 1901, by M. 

 Cary, seems referable here. Also before the writer is a series of 

 three females and one male from Custer, South Dakota, a female 

 collected at Newcastle, Wyoming, in June, by M. Cary, a female 

 from Ward, Colorado, and an interesting series of eleven females 

 and five males from Russell, Fort Garland and Ute creek, Colo- 

 rado, taken June 24 to July 19, 1907, by Messrs. H. S. Smith, 

 L. Bruner and R. W. Dawson. All of these specimens seem to be 

 conspecific and they agree too closely with the description of 

 A. tenuiflorae to warrant any separation from that species; yet 

 the scopa is often nearly wholly pale and the tegulae usually lack 

 the pale posterior spot in the female, while in the male the scape 

 is usually black or at best has only a short apical pale line, and the 

 pygidial lobes, though variable, are usually broader than the space 

 between them and the central spine. 



Anthidium nebrascense n. sp. 



c?. Length 11-12 mm. Black; the clypeus, broadly cuneate lateral face 

 marks filling the space between clypeus and orbits, most of outer surface 

 of mandibles, small dots on vertex behind summits of eyes, sometimes a 

 spot on front of tegulae, spots on all of the knees, large triangular areas 

 or stripes on outer side of tibiae apically, outer side of all the basitarsi, 

 rounded or subquadrate spots on sides of tergite I with sometimes tiny 

 discal spots, four spots on tergite 2, interrupted and deeply anteriorly 

 emarginate bands on tergites 3-5, two cuneate spots on 6 and sometimes 

 spots on the pygidium, yellowish white to chrome yellow. Head and thorax 

 very densely and quite strongly punctured, the punctures distinct except 

 on propodeum where they are shallow and poorly formed. Antennae 

 wholly black. Pubescence wholly whitish except for the usual pale golden 

 areas on the tarsi within, on vertex, mesoscutellum and pleura rather long 

 and copious. Lobes of pygidium rather narrowly rounded, their width 

 not greater than the distance between their bases and the central spine. 

 Abdominal tergites finely and densely punctured except on the pale spots 

 or bands, the punctures apically distinct but indistinct on the bases of the 

 tergites. Wings very slightly darkened, the nervures and stigma blackish. 



?. Length 10 mm. Black; round spots on sides of clypeus, oval spots 

 on sides of face nearly coalesced with the clypeal spots, outer side of 

 mandibles except base and tip, oval spots on vertex behind summit of eye, 



14 



