90 ORTHOPTEEOUS GROUP INSARAE 



These measurements at once show that, when compared with 

 elegans, the proportions of the present species differ chiefly in the 

 mesal and distal width of the tegmina and the length of the caudal 

 femora. 



Color Notes. — The general color of the great majority of the speci- 

 mens before us is a dark shade of bice green, a few individuals are 

 tinged with prout's brown while one or two have the general color 

 prout's brown siiaded with olive green on the tegmina and exposed 

 portions of the wings. The convexity on the caudal margin of the 

 dorsum of the pronotum and the raised callosities on the ventro- 

 caudal portion of the lateral lobes are white, sometimes tinged with 

 greenish ; the inner border of this marking on the caudal margin of 

 the dorsum of the pronotum is acute-angulate emarginate mesad. 

 The tegmina are strikingly marked with a regular succession of 

 large spots, white in the majority of specimens, but more or less 

 tinged with green in a few individuals. These spots are four to six 

 in number, those situated proximad being well rounded while those 

 situated distad are more drawn out, the last being indicated fre- 

 quently by a mere transverse lineation; all are in contact with the 

 sutural margin of the tegmen. The cephalic and median tibiae 

 have the non-swollen portions white or pale greenish, the caudal 

 femora have the proximal half of the non-swollen distal portion of 

 the same color and this is likewise found to be true of those portions 

 of the caudal tibiae which lie adjacent to the light portions of the 

 caudal femora when the limbs are closed. The fourth dorsal ab- 

 dominal segment is heavily marked with Vandyke brown, becoming 

 darker in shade caudad to the caudal margin, which margin is strik- 

 ingly defined by a broad band of white. As in the other species of 

 the genus, particularly those of green coloration, a number of spec- 

 imens of the present species have faded considerably in drying, 

 especially about the body. 



Distrihution. — The series before us shows that the present species 

 is found over a wide range in the desert regions of the Southwest 

 where the creosote bush {Covillea tridentata) flourishes. The dis- 

 tribution of that bush, however, covers a much greater area than 

 that of this monotropic species, as has been proven by the authors' 

 careful examination of the creosote bush over almost its entire 

 range. The insect has been found from Lordsburg, New Mexico, 

 westward through the desert portions of southern Arizona, north- 



