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



ALLOTEOPOUS. 



Saw-fly: 252, s. 



Flies: 285; 353; 369; 378; 410— all s. or. f. p. 



Beetles : 531 ; 535 — both s. 



Eutrop 3 = 9.1% 



Hemitrop 22 = 66.7% 



Allotrop 8 = 24.2% 



Arctium L. 

 34. Arctium Lappa L. Great Burdock. 



This European weed is exceedingly common in our region, 

 blooming from around July 2 to November. It produces heads 

 with very inconspicuous purple tubes. The dimensions of the lat- 

 ter are 3^2 mm. depth and i*4 mm - width, and the lobes of the 

 corolla are erect and about i)/ 2 mm. long. In spite of the remark- 

 ably small amount of color displayed by these flowers, they suc- 

 ceed in attracting quite a number of visitors, and this is probably 

 due to their fragrance. The following 58 insects (with the ex- 

 ception of Melissodes nivea taken at Milwaukee) were observed 

 at Cedar Lake, Washington Co., Wis. 



EUTEOPOUS. 



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

 and worker, s. and c. p. ; 6, worker, s. and c. p. ; 7, female, s. and c. p. ; 

 9, worker, s. and c. p. ; 11, male and worker, s. and c. p. ; 12, worker, 

 s. and c. p. ; 13, worker s. and c. p. ; 20, male, s. ; 23, female, s. and 

 c. . ; 33, female, s. and c. p. ; 34, female, s. and c. p. ; 35, female, s. 

 and c. p. ; 40, female, s. ; 45, female, s. ; 54, female, s. 



HEMITEOPOUS. 



Bees : 99, female, s. and c. p. ; 100, female, s. and c. p. ; 102, 

 female, s. and c. p. ; 105, female, s. and c. p. ; 107, female, s. and c. p. ; 

 108, female, s. and c. p. ; 109, female, s. and c. p. ; 114, female, s. and 

 c. p. ; 118, female, s. and c. p. ; 119, female, s. and c. p. ; 120, female, 

 s. and c. p. ; 122, female, s. and c. p. 



Wasp : 198, s. 



Flies: 277; 279; 295; 298; 300; 307; 308; 313; 316; 317; 318;. 

 319 ; 322 ; 324 ; 330 ; 332— all s. or f. p. 



Butterflies: 450; 451; 452; 454; 475; 480; 481; 483— all s. 



ALLOTEOPOUS. 



Wasps: 137; 141— both s. 



Beetles: 519; 525— both f. n. 



Eutrop '. 17 = 29.3% 



Hemitrop 37 = 63.8% 



Allotrop 4 = 6.9% 



