8 UniversUy of Michigan 



a given region. Second, that none of these collections is fully 

 representative of the Heterocerous fauna of its locality. The 

 latter appears to be the more reasonable assumption. In the 

 check list are given 66i species of Rhopalocera. Of these, 73 

 are known to occur in the region under consideration. Using 

 the same proportion, there should be about 450 species of 

 Heterocera in the same region, excluding the Tineoidea, 

 whereas there are but 285. One thing at least is apparent : a 

 great deal of field work remains to be done before a repre- 

 sentative list of Michigan Heterocera can be compiled. 



Papilionidae 



1. Popilio polyxcncs Fabr. — Schoolcraft; June 12. One 

 male. Rare. 



2. Papilio glaucus Linn. — Schoolcraft, Mackinac, Charle- 

 voix; May 20- July 16. Abundant. 



PlERlDAE 



3. Picris protodicc Bdv. & Lee. — Mackinac; August 21- 

 October 14. Rare. All specimens taken have been females. 



4. Pieris napi Linn., form oleracea Harris. — Mackinac, 

 Charlevoix, Emmet, Cheboygan ; May 26-July 5. Common, 

 especially in heavy woods. 



Form cntciferai'u)u Bdv. — Mackinac, Charlevoix, Emmet; 

 June 26-September 8. Common in open fields. 



5. Picris rapac Linn. — Schoolcraft, Mackinac, Charlevoix, 

 Marquette ; May 20-September 3. Two specimens of the form 

 itninacidata Ckll. were taken at St. Ignace, June i. 



6. A^othalis iolc Bdv. — Gogebic ; July 29. One female, 

 taken by sweeping roadside bushes. 



7. Zcgris olympi<i rosa Edw. — Cheboygan ; May 12. Two 

 specimens, a male and a female, taken near Cheboygan, and a 

 second male seen. 



