Occasional Papers of the Museum of Zoology 69 



sand floor near the edge of the oak dune forest. Mature speci- 

 mens did not become common until the middle of July. 



CeutJwphiliis nigricans Scudder. 



Warren Woods, June 26, 1919, i female; ? July i, 1919, i immature 



female. 

 Sawyer Dunes, ? July 7 and 15, 1920, 2 immature males ; July 19, 



1920, I female. 



Very much less common than Ceuthophilns latens, but occur- 

 ring in the same situations. One nymph was taken under a 

 rotten log in the oak dune forest ; the rest from molasses traps. 



The determination of this species is somewhat doubtful ; 

 Rehn did not care to express an opinion on the identity of 

 these specimens. The two females agree well with the descrip- 

 tion given by Blatchley, except in regard to the teeth of the 

 ovipositor, which are somewhat too aciculate to accord well 

 with his description and figure. 



Gryllidae 

 gryllotalpinae 



Gryllotalpa hexadactyla Perty. 



Warren Woods, June 29 to July 2, 1919, 5 immature specimens ; 



September i to 3, 1919, 3 males, 3 immature specimens. 

 Stevensville, August 17, 1906, i female (collection Mich. Agr. Coll.). 



Nymphs of this species were found to be quite numerous 

 in the saturated sandy margins of a small pool on a spring}- 

 hillside near the preserve. The sand down to at least six or 

 eight inches beneath the surface was riddled with their bur- 

 rows. The nymphs taken here in September are less than 

 half the length of those taken in late June and early July, 

 which were nearly mature. 



Near the Warren Woods Preserve on September i, while 

 collecting in a low, moist meadow pasture, a chirping song 

 was heard which was similar in cadence to that of Gryllus 

 assimili-s, but of different pitch and tone, being soft and low, 



