46 University of Michigan 



dune region. It is most abundant in the beach grass and 

 bunch grass habitats of the upper beach and blowouts. It 

 also occurs in small numbers on the bare dry sand of the 

 middle beach, and occasionally on the bare sand crests of 

 dune ridges near the inland margin of the dune area ; no speci- 

 mens were taken at a distance of more than a half mile from 

 the lake shore. A single mutilated specimen was found in 

 the beach drift. 



The first mature specimen was taken July 9 ; the species 

 was still abundant on September 9, the latest date on which 

 collections were made. Hancock records it from Lakeside in 

 August. 



This series of 51 adult specimens exhibits considerable 

 range of variation in the depth of color of the disk of the 

 wings and in the character of the fuscous band. The latter 

 varies greatly in width, from one-fourth to one-seventh of the 

 length of the wing, and also in degree of infuscation, from 

 the solid broad band described by Walker as being typical of 

 his race interior to the narrow band somewhat interrupted by 

 the pale radial and cross veins characteristic of the typical 

 form. The tegmina vary from a more or less distinctly banded 

 type to one almost without markings. Similar observations 

 recently led Blatchley to place interior in the synonymy under 

 maritima ( Harr^ls ) . 



LOCUSTINAE (acRIDINAE) 



Schistocerca alutacea form ahttacea ( Harris). ^^ 



Warren Woods, August 31, 1919, i male; September 7, 1920, 3 males, 



I female. 

 New Buffalo, September 2, 1919, 4 males, 2 females. 

 ? Sawyer Dunes, July 10, 1920. 3 immature specimens. 



Moderately common in a wet lizard's tail marsh at New 



13 Determination verified by J. A. G. Rehn. 



