REHN AND IIEBARD 



407 



Mensurements {in millimeters) 





■5 ° o Sc 



= S I'S o o g 



■ l> j 



Cog 



3a5 

 ►-3 



C =3 g 



Atlanta, Georgia 2.1 



Thomasville, Georgia 2.3 



Bainbridge, Georgia I 2.3 



Homestead, Florida l 2.3 



Hot Springs, Ai-kansas 2.4 



Hot Springs, Arkansas j 2.3 



Tiger Mills, Texas I 2.8 



Beaumont, Texas j 2.3 



Gregory, Texas 2.3 



Brownsville, Texas 2.4 



Yuma, Arizona 2.6 



1.6 



1.7 



1.8 



1.7 



1.9 



1.7 



2 



1.7 



1.8 



1.7 



1.6 



1.9 



1.9 



2 



1.9 



2 



1.9 



9.1 



9 



9 



7.7 

 9.2 

 8.3 

 9.7 

 8.1 

 8.1 

 9.2 

 8.2 



48.4 

 48.7 

 50.8 

 42.5 

 49.9 

 47.8 

 53.2 

 43.3 

 43.4 

 51.7 

 45.7 



26.1 

 25.9 

 26.6 

 23.1 

 25.8 

 25.4 

 28.2 

 24.4 

 22.9 

 27.7 

 24.9 



24.6 



25.3 



26 



23.8 



26.1 



25.6 



27.1 



20.9 



22.3 



25.1 



23.8 



We have not given a table of measurements for the male sex, 

 for, though averaging slightly smaller, the male proportions are 

 quite similar to those of the female. 



The cephalic and median femora are unarmed or supplied with 

 very small, moderately heavy spines on the cephalic margins, 

 in the series before us the range being 0-3; the caudal femora have 

 the ventral margins armed with very small spines (smallest on 

 the external margins), the extremes in the series before us are, 

 internal 6-11, external 6-10 in number. Occasionally in individ- 

 uals of both green and brown color phases the areas beneath each 

 of these very small spines are darkened, but seldom as noticeably 

 as in A^. palustris. 



In the brow^n color phase variation exists with degree of in- 

 tensity of general coloration. Very pale examples often have 

 the femora and tibiae of the general coloration (such material 

 having been recorded occasionally as obscurellus) , darker speci- 

 mens have the ventral margins of the femora very dark (these 

 appearing in the literature frequently as fusco-striatus) while the 

 extreme intensity of coloration found in the darkest specimens 

 have such markings still more decided, the tibiae correspond- 

 ingly infuscated, the jaws more yellow, and the lateral stripes of 

 the pronotum more distinct, (unfortunately described by Karny 

 as var. tibialis). The types of triops, obtusus, dissimilis and 

 mexicanus are of the green color phase; the latter name has been 



TRANS. AM. ENT. SOC, XL. 



