1906.] NATURAL SCIENCES OF PHILADELPHIA. 385 



ecru drab distinctly annulate with bistre. Caudal femora ecru drab 

 with three distinct very dark bars and a solidly colored genicular 

 region, the bars being paler laterad than dorsad, the pregenicular 

 annulus ochraceous bujff; caudal tibise rather dull citron yellow touched 

 with spots of fuscous and with the genicular sections bistre and the 

 tips of the spines blackish. 



Measurements. 



Length of body, 17 mm. 24 mm. 



Length of pronotum, 3.5 " 4.5 " 



Length of tegmen 18.2 " 26 " 



Length of caudal femur. 9.2 " 12.5 " 



A series of one male and two female paratypic specimens have been 

 examined in addition to the types. The paratypic male has the 

 markings slightly more subdued than in the male type. One of the 

 female specimens is marked as in the male type with strongly con- 

 trasted colors, except that the tegmina have the bars somewhat 

 obsolete and the anal area with the veins more strongly lined with 

 dark. The remaining female specimen is colored much the same as 

 the type, except that the bars of the tegmina are slightl}' less con- 

 spicuous. 



The female type is slightly larger than the paratypic individuals of 

 the same sex, while the additional male is slightly larger than the 

 type. 



This species was found in the arid valley of the Grand river near 

 Antlers station, where the only vegetation was a heavy growth of low 

 cactus interspersed with occasional sage. Specimens were by no 

 means uncommon and could have been easily taken in numbers had 

 the cactus not interfered so much with collecting, as when alarmed 

 the individuals would invariably seek refuge in the dense beds of 

 cactus. Orthoptera were not present in great numbers at this locality 

 but the few species represented were quite interesting. The species 

 yEoloplus chenopodii was the most abundant and most striking. 

 Trimerotropis gracilis (Thomas). 



Antlers, Garfield Co., Colorado, Aug. 15, 3 9 . 



This very distinct species has been recorded from localities ranging 

 from central Idaho to Salt Lake Valley and Colorado. Thomas has 

 recorded it also from the northern boundary (49th parallel) of Mon- 

 tana and Dakota, and Scudder includes Nebraska in its range. Caudell 

 has definitely recorded this species from Durango, Colorado, and Gillette 

 credits it to nineteen localities in the same State, the most eastern 



