1916.] NATURAL SCIENCES OF PHILADELPHI \ . 293 



Georgia, are as dark as any specimens before us, but have the lateral 

 lobes of the pronotum entirely pale. 



In the United States the males have the tegmina reaching to, or 

 falling slightly short of, the apex of the abdomen; the females have 

 the tegmina never less than half the abdominal length, frequently 

 about two-thirds that length, though more variable than the males 

 in this feature. Of the above series two females (Washington) are 

 macropterous, one female (Victoria) has a single caudate but imper- 

 fect wing, while one female (Falls Church) has long tegmina but 

 aborted wings. 



It might seem that geographic races could be recognized, but 

 careful study, of this and much larger tropical American series, 

 shows that variation such as discussed above occurs in an endless 

 complexity, and that intermediates of every sort occur between 

 conditions which might easily be supposed, without sufficient material 

 for comparison, to represent geographic races or even closely related 

 species. The form of the male titillatores is the same in all of the 

 material of the species examined. 



In the United States adults of the species appear in April, May 

 and June, later than this individuals are scarcely ever encountered. 



The present insect has long been known to be very destructive in 

 the southeastern United States, damaging cotton, tobacco, sweet 

 and white potatoes, strawberries, peas and other farm products. 

 The series here recorded was taken: in fence corner and in truck 

 patch (Ocean View), in cotton field (Beech Island and Auburn), 

 on fences and walls of yard of bermuda grass, stridulating at dusk 

 (Hebardville) and injuring strawberries (Lawtey). 



The records given above define the known range of the species in 

 the United States. 



Gryllus assimilis Fabricius. 



Recent studies have shown this to be the only native representative 

 of the genus found in America. 158 Great variation, however, exists 

 and we have found the variants to be best represented by symbols. 109 

 Of these, the following four are found in the regions at present under 

 consideration : 



B, suffused Z, (normally d or e, w), (45 to 2, the latter weakly 0); 

 scudderianus. 



AU, (normally ax), 4; neglectus. 



158 Rehn and Hebard, Paoc. Acad. Nat. Sci. Phila., 1915, pp. 293-322, (1915). 

 150 S.-p Proc. Acad. Xat. Sci. Phila., 1915, pp. 299, 300, (1915). 



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