THE CANADIAN ENTOMOLOGIST 209 



to Sept. 8. I have never been quite satisfied with the disposition of this species, 

 but Mr. Crawford writes that he has twice compared it with the types. 



Panurginus piercei Crawford. 



Fargo, Valley City, Dickinson (C. H. Waldron), Monango (J. F. Brenckle). 

 Mott (J. R. Campbell). Wales, Lakota, Crary and Perth. At flowers of Grindelia 

 squarrosa, Ilelianthus annuiis (cult.) , H .max imiliani, H. scaberrimus, H. tuberosiis 

 and Solidago rigida; Aug. 8 to Sept. 16. 



Two other species of Panurginus have been collected but not yet determined. 

 One is a species related to P. parvus Rob. flying in July; the other is autumnal 

 and probably related to some of the eastern forms. 



Fig. 25.— 1. Perdila Iridentala — face markings of type. 



2 and 3. Hesperapis carinala — dorsal (fig. 2) and laterol (fig. 3) view of seventh 

 and eighth abdominal segment. 



Hesperapis carinata, new species. 



Male. — Length 10-11 mm. Black with dense ochraceous pubescence, 

 which is paler on the face and pleurae, also on the thorax above in some speci- 

 mens; face narrowed below, about as long as the median width; vertex smooth 

 and shining, produced but very little beyond the eyes; antenna? not elongate, 

 black; the flagcllum reddish beneath, its joints scarcely longer than wide except 

 the first and last which are slightly so, the second half as long; maxillary palpi 

 about 750 microns, the six joints subequal; joints of the labial palpi about 

 425, 425, 275 and 275 microns; mandibles toothed. 



Mesoscutum rather dull, the punctures of moderate size and separated by 

 slightly more than a puncture width; propodeum rounded, the central area 

 very smooth and shining, the sides dull and hairy; tegulse reddish yellow; wings 

 hyaline, nervures and stigma honey colour, the subcosta darker; first submarginal 

 one-half longer than second, the second narrowed a little more than half; cubital 

 nervure very straight throughout, also the second transverse-cubital, and the 

 basal nearly so; the basal received a little anterior of the transverse medial; 

 legs not thickened, dark, tarsi reddish yellow, the claws deeply cleft. 



Abdomen dull, first segment more shining and with a thin ochraceous 

 pubescence; the others with short black hairs a;^d a few scattered ochraceous 

 ones especially on the second and third; all with prominent apical ochraceous 

 bands; seventh dorsal segment punctured at the base and with ochraceous 

 pubescence at base and on the sides, testaceous, smooth and shining with a 

 high, Y-shaped carina; eighth ventral somewhat narrowed and rounded at 

 apex. (Fig. 25—2, 3). 



Ten males, at flowers of Helianthus scaberrimus in the sand hills near Sheldon, 

 North Dakota ; August 12, 1916. Type No. 9681. Also six males at //. petiolaris, 

 same place August 21, 1918. This runs in Cockerell's table (Psyche, 1916, 

 p. 176) to larrecB, but Prof. Cockerell writes that the superficial resemblance is 



