394 PROCEEDINGS OF THE ACADEMY OF [July, 



Road near Tucson Mountains, July 25, 13 c?, 9 ? , 1 nymph; Roeble's 

 Ranch, July 25, 1 9 ; Williams, September 13, 1 c?, 1 9 . 



In size but little variation is noticeable; the tegmina of the two 

 Williams specimens, however, do not exceed the tips of the caudal 

 femora. Five specimens from Sonora Road are decidedly brownish, 

 one strongly so, while all the others are shades of green, in a few cases 

 with a faint bluish tinge to the tegmina. Reddish pregenicular 

 annuli are indicated more or less strongly on the caudal femora of all 

 but three specimens, which latter are either in or approach the brown- 

 ish phase. The pale medio-longitudinal line on the pronotum is nar- 

 rower in the Williams specimens than in a number of individuals from 

 southern Arizona, 



This insect was one of the few species which was invariably found 

 on or near rabbit-weed. In the rabbit-weed tracts a number of speci- 

 mens were often found in one small clump of the weed. Relying on 

 its protective coloration the insect often sought shelter in the center of 

 the clump, but when frightened out of its retreat flew very swiftly 

 on almost all occasions to another bunch of the same plant. 



.ffiOLOPLTIS Scudder. 

 .ffioloplus tenuipennis Scudder. 



At Tucson this species was found in weeds growing along an irrigat- 

 ing ditch and a series of six males and three females was taken on July 

 26, while at Yuma a single male was collected on July 27. While 

 agreeing with the original description in all essential points the Tucson 

 individuals are decidedly larger than the type. The extremes of the 

 series measure as follows : 



Length of body, 17 



Length of pronotum, 

 Length of tegmen, . 

 Length of caudal femur, 



In color there is an appreciable amount of variation in the depth of 

 the bars and maculations, the specimens with the base color dull ochre 

 having the pattern more marked, while those with the same more 

 yellowish have the pattern weaker. The pink of the proximal two- 

 thirds of the caudal tibiae varies greatly in depth of color, being very 

 delicate shell pink in some specimens and solferino in others with inter- 

 mediates of various shades. 



This species was described from Fort Grant, Graham County, Ari- 

 zona, and has since been recorded from Bill William's Fork, western 

 Arizona. 



