100 PROCEEDINGS OF THE ACADEMY OF [Jan., 



The variation in size appears to be purely individual aside from the 

 possible presence of a larger race at the southern extreme of the 

 range of the species. The individuals from Victoria, Tamaulipas, 

 are of peculiar interest in this connection, the pronotum in both 

 sexes being shorter and broader than in the other specimens of the 

 species, while the legs are somewhat thicker and more robust than in 

 by far the greater portion of the Texas series, but their length pro- 

 portions are matched in other individuals. The tegmina in the 

 Victoria male are shorter and broader than in any other individual 

 of the same sex seen, the distal portion being much less produced 

 with the margin decidedly truncate. The size of the tegmina is seen 

 to vary somewhat in the female sex, the width of the interspace 

 between the two also fluctuating, but the latter is never wide enough 

 to cause any difficulty in determining the species. The Tamos 

 female is unique in its great dimensions, aside from which it is per- 

 fectly typical of the species. We doubtless have here parallelism 

 to the condition of sporadic giantism found in the next species, under 

 which the matter is discussed. It is possible that in this case the 

 variation is geographic, but our material from Mexico is too meager 

 to make any definite assertions. 



Color Notes. — The following color notes are all based on stuffed 

 specimens, all of which, with the exception of two individuals, were 

 prepared by the authors and have retained in practically its entirety 

 the original coloration. ^^ 



The general pattern of the male has the dorsum of the head, 

 pronotum, and abdomen dark and generally uniform, paired pale 

 lines extending from the caudal margin of the eye, marking the 

 boundaries of the disk of the pronotum, involving the whole marginal 

 field of the tegmina and present as broader lateral bars on the abdo- 

 men. The abdominal segments have pale beaded margins caudad, 

 these rarely outlined proximad with blackish. In the male the 

 general color of the venter and of the lateral aspects of the pronotum, 

 pleura, al^domen and proximal portions of the femora vary from 

 honey yellow to parrot green in shade and also considerably in 

 intensity. The color of the dorsum of the head, pronotum, and 

 abdomen in the same sex ranges from clear mahogany red through 

 argus brown to nearly clear pyrite yellow. This color is usually 



1" Three males and eight females listed in the summary of specimens have not 

 been stuffed and are disregarded in the remarks given above. They are all 

 much browner than any of the freshly prepared individuals collected by the 

 authors and in three cases have the color pattern much intensified on the abdomen. 



