66 Bulletin Wisconsin Natural History Society. [Vol. 7, Nos. 1-2. 



EUTROPOUS. 



Bees: 1, worker, s. and c. p.; 2, male, s. ; 4, female, s. and c. p. ; 

 11, worker, s. and c. p.; 12, male, s. ; 13, female, s. and c. p.; 19, male 

 and female, s. and e. p. ; 20, male and female, s. and c. p. ; 22, female, 

 s. and c. p.; 34, male and female, s. and e. p.; 35, male and female, 

 s. and c. p. ; 36, female, s. and c. p. 



HEMITEOPOUS. 



Bees : 86, female, s. and e. p. ; 99, male, s. ; 105, female, s. and 

 c. p. ; 106, female, s. and e. p. ; 119, female, s. and c. p. 

 Wasps : 186 ; 188 — both s. 



Flies : 306 ; 307 ; 313 ; 319 ; 332 ; 341 — all s. or f . p. 

 Butterflies and moths : 451 ; 467 ; 494 — all s. 



ALLOTROPOUS. 



Flies : 262 ; 352— both f . p. 



Beetle: 516, f. p. 



Bugs : 553 ; 554— both s. 



Eutrop 12 = 36.4% 



Hemitrop 16 = 48.5% 



Allotrop 5 = 15.1% 



Helianthus L. 



In our local species of sunflowers there exists to all appear- 

 ances a remarkable uniformity in the structure of the flowers, 

 especially so in regard to the tube length of the discal florets. The 

 differences noticeable in the different species pertain to the size of 

 the heads, the lighter or darker shades of yellow in the rays, the 

 number of the latter and the yollow or brownish color of the disk. 



25. Helianthus strumosus L. Pale-leaved Wood Sunflower. 



Its blooming period extends from about July 20 to August 18. 

 The tube of the discal floret has a length of 4^2 mm. and is of 

 equal width {1% mm.) throughout in its upper portion, but nar- 

 rows considerably near the bottom. The tube is crowned by erect 

 lobes i 1 -^ mm. in length. 



At Milwaukee the following 63 visitors were obtained. 



EUTROPOUS. 



Bees : 1, worker, s. ; 4, female, s. and c. p. ; 9, male, s. ; 11, male, s. ; 

 12, worker, s. and c. p. ; 13, male, s. ; 16 male, s. ; 17, female, s. and c. p. ; 

 19, male and female, s. and c. p. ; 20, male and female, s. and c. p. ; 23, 

 male, s. ; 24, male, s. ; 25, male and female, s. ; 26, male, s. ; 33, female, 



