400 PROCEEDINGS OF THE ACADEMY OP [Sept., 



This individual is much smaller than the males measm'ed by Scudder. 

 Gillette ^^ has called attention to the variation in size in this species. 

 Beaten from thicket of weeds. 



HESPEROTETTIX Scudder. 

 Hesperotettix viridis (Thomas). 



Knob Hill, Colorado Springs, Colorado, Aug. IS, 1 ? . Prairie land, 

 Colorado Springs, Aug. 18, 1 d^, 2 9. Hill near cog-road station, 

 Manitou, Colorado, Aug. 16, 2 9 . 



These specimens vary considerably in size, the Manitou females 

 being larger than any of the others, and similar to two from Arizona 

 and New Mexico, while seven specimens from five other Colorado 

 localities are in size about equal to the Colorado Springs individuals. 

 The coloration varies very little, and then only in the intensity of the 

 blackish head and pronotal markings. 



This species was found distributed over a considerable region, but 

 was in no place common. 

 Hesperotettix festivus Scudder. 



Salt Lake City, Utah, Aug. 13 and 14, 10 c?, 11 9 . Hillside at Salt 

 Lake City, Aug. 14, 1 c?, 1 9. Top of Ensign Peak, Salt Lake City, 

 Aug. 13, 2 d", 2 9. 



This series as a whole has shorter wings than nine individuals from 

 southern Aiizona, and in consequence of this the specimens appear 

 somewhat more robust. The variation in size in the females is con- 

 siderable, the larger type greatly predominating, while the males 

 vary appreciably. The coloration tends in some specimens toward 

 brownish and in a few is distinctly brown. This is also true of a male 

 Salt Lake City specimen -^ which has been in the Academy collection 

 quite a time. 



This species was by far the most plentiful of the genus Hesperotettix 

 which I found, and individuals were quite coimnon in the sage growing 

 from the foot to the top of Ensign Peak. Individuals of the species 

 were very active, but relied chiefly for protection on their jumping 

 ability, which was very considerable. 

 Hesperotettix gillettei Bruner.^^ 



Newcastle, Garfield Co., Colorado, Aug. 15, 1 9 . 



This recently described species is only known from the Grand river 

 drainage. 



" Bull. 94, Colo. Agric. Exp. Sta., p. 38. 

 " July 24, 1898. 



23 Hesperotettix Gillettei Bruner, Bull. 94, Colo. Agr. Exp. Sta., p. 61, 1904. 

 [Rifle, Glen wood Springs, Delta and Grand Junction^ Colorado.] 



