1915.] NATURAL SCIENCES OF PHILADELPHIA. 303 



pennis appears to be an adaptation similar to the pennsylvanicus 

 variant, but heavier, though no more compact, with larger head; 

 under argeniinus appear to be described numerous adaptations, though 

 tyjjically suggesting the luduosus variant with tegmina f. Saussure's 

 argeniinus variety c is, however, an adaptation similar to the per- 

 sonatus variant, but with color pattern scarcely developed. 



We have not referred to Walker's names here, as the majority have 

 already been proven synonyms and the descriptions are worthless. 



We feel certain that the other described South American species 

 have no further significance than the North American variants 

 discussed above. We have noted that in the mountains, particularly 

 those of arid or semi-arid regions, a degree of plasticity is found 

 greater even than exhibited elsewhere by this most plastic species. 

 Several South American names are doubtless applicable to such 

 manifestations of the species. 



Females, as a rule, have the tegminal and femoral markings more 

 decided than in the male sex, thus frequently in the same series the 

 males will show VWa, while the females will average Wb. 



As in our other recent papers, the material collected by one or 

 both of the authors is understood to be in The Academy of Natural 

 Sciences of Philadelphia or Hebard Collection. 



Specimens Examined. — -1501; 570 males, 857 females, 41 immature 

 males and 36 immature females. 



Rhode Island. 



Providence, IX, 28, 1896, 1 9 , (AXgx 2), [A. N. S. P.]. 

 Wesquage Beach, IX, 8 to 10, 1913, (H; upland fields), 2 9, 

 (AVgx 2; AVgw 2). 



Connecticiit. 



New Haven, VI, 1, 1910, (H.), 1 cf , 1 9 ,'' (cf AVaw 4; 9 AVgv4), 

 X, 1909, (H.), 1 9 , (AVey 2). 



N^eiv York. 



Peekskill, IX, 16, 1912, (E. G. Vanatta), 3 9, (AVbx 2), [A. N. 

 S. P.]. 



Pennsylvania. 



South Sterling, IX, 14, 1906, (B. Long), 1 cf, (AUaw 4), 

 [A. N. S. P.]. 



Tobyhanna, IX, 1, 1903, (H.), 1 d', 1 9 , id" AUaw 3; 9 AUVay 

 3). 



Lehigh Gap, VII, 12, 1897, 1 c^,.(AUXdw 3), [A. N. S. P.]. 



^= Recorded by Hebard as Gryllus neglectus. 



