Occasional Papers of the Mtiseuni of Zoology 13 



western fauna is indicated in Pctrophora convallaria, Eois 

 pcrsimilis and Alcis sulphiiraria which are also as a rule rare 

 species ; the last two named being found very rarely in the 

 east. Among the other more interesting forms are Caripeta 

 crhninosa and C. angustiorata. Another interesting species is 

 Diastictis inceptana. There seems to be some confusion re- 

 garding this species and possibly some of the specimens are 

 Diastictis evagaria. 



Miss Annette F. Brown says of the Microlepidoptera that 

 a number of the species are western and northern. 



Another factor which may influence the Whitefish Point 

 fauna to a certain degree is the hardwood belt extending 

 approximately from Point Iroquois to Grand Alarais. This 

 belt serves somewhat as a barrier to migration, for certain 

 species at least, as it cuts off direct communication between 

 the central sandy plains region and the Whitefish Point dune 

 areas. Several species of butterflies, were seen and captured 

 along the Eckerman- Whitefish Point road between Eckerman 

 and the hardwood belt which were not taken at the Point and 

 which one would naturally expect to find there. To the casual 

 observer the Whitefish Point area seems to support much of 

 the vegetation of the central sandy plains region, which takes 

 in the Manistique River basin and extends towards Eckerman 

 to the hardwood belt, and in addition has the sand dune vege- 

 tation. This would lead one to expect to find most of the 

 species common to the central sandy plains region and in 

 addition the southern forms. But from such collections as 

 have been made it is evident that a number of species com- 

 mon on the sandy plains region are not found at Whitefish 

 Point. 



Mention may be made here of three butterflies taken on the 

 trip which are new records for Michigan, namely, Grapta 



