54 THE CANADIAN ENTOMOLOGIST 



P. bruneri Cockerell. The type locality of the species is West 

 Point, Nebraska, and it has also been reported by Swenk and 

 Cockerell from Lincoln in the same state. A single specimen of this 

 bee, a visitor of the Composite, was collected by the writer from 

 the flowers of Rudbeckia hirta near the Kettle River rapids of the 

 St. Croix River in Burnett Co. 6 It is quite common in the Wau- 

 kegan-Kenosha dune region of northeastern Illinois and south- 

 eastern Wisconsin, where it has been taken mostly at the flowers 

 of Helianthus occidentalism and occasionally at those of Liatris 

 scariosa Willd. (Large Button Snake-root). 



P. maura Cockerell, a visitor of the ground-cherry (species of 

 Physalis) was described from Cedar Bluffs, Nebraska, and has 

 since been reported by Swenk and Cockerell from other parts of 

 that state. 



In Wisconsin it was first met with at Milwaukee, and it has 

 been found also at various points along our western border from 

 Hudson on the lower St. Croix River (about 15 miles east of St. 

 Paul, Minn.) down along the Mississippi River to Rutledge in the 

 southwestern corner of the state. In Nebraska it has been ob- 

 served late in the' fall, at a time when the ground-cherries were 

 probably out of bloom, on the flowers of Aster, but in Wisconsin I 

 have never seen it visiting the flowers of any other plant except 

 those of the ground-cherries Physalis heterophylla Nees, and P. 

 pubescens L. 



P. maculipennis Graenicher. Just south of the present city 

 limits of Milwaukee, and a short distance from Lake Michigan is a 

 sandy area of small extent, and this is the type locality of the 

 species. In addition to the specimens collected here, and in a 

 sandpit to the west of Milwaukee, a single specimen was taken two 

 years ago in the Mississippi valley near Genoa, Vernon Co., about 

 12 miles south of La Crosse. Although I have observed this bee 

 in its type locality for a number of years, it was not until last sum- 

 mer that I succeeded in finding the source of its pollen-supply, 

 viz., the flowers of the white melilot {Melilotus alba Desv., Fam. 

 Leguminosae). On account of the fact that this plant has come to 

 .us from the Old World not long ago, we are led to the conclusion 

 that P. maculipennis depended originally on some native plant of 

 6. Reported in Bull. Publ. Museum Milwaukee, vol. 1, pp. 221-2 ts 



