1906.] NATURAL SCIENCES OF PHILADELPHIA. 371 



3 



the hillside above Manitou, Colorado, I found the species in about the 

 same numbers as at the Hot Springs. From Dark Canon to the 

 highest grassy locations on Pike's Peak, however, the species was 

 common in all favorable locations. The insects were found most 

 common in all open grassy spots, especially above the timber-line 

 where short grasses grow everywhere between the scattered boulders. 

 The males are very active and are constantly stridulating — sik-sik-sik- 

 sik — a sound louder but similar to that produced by Stauroderus 

 curtipennis. The females are slow and clumsy in their movements, 

 appearing quite different from the males. 



PSOLOESSA Scudder. 

 Psoloessa maculipennis Scudder. 



Knob Hill, Colorado Springs, Colorado, Aug. 17, 1 9 . 



This specimen is somewhat smaller than Kansas and New Mexican 

 individuals of the species. The previous Colorado record of this 

 species was simply "Southern Colorado." 



While sweeping the prairie grass, a single specimen of this species 

 was taken from among the hundreds of more common species. So 

 great was the number of common Orthoptera in this locality that it 

 was impossible to search for the scarcer individuals, but this species 

 was not met with again even though much sweeping was done in the 

 same vicinity. 



AGENEOTETTIX McNeill. 

 Ageneotettix deorum (Scudder). 



Livingston, Park Co., Montana, Aug. 4, 1 c?. Salt Lake City, 

 Utah, Aug. 13-14, 9 d", 6 ? . Grand Junction, Colorado, Aug. 15, 1 c? . 

 Antlers, Colorado, Aug. 15, 3 cJ', 1 9 . Knob Hill, Colorado Springs, 

 Colorado, Aug. 17-22, 73 c?, 87 9. Austin Bluffs, Colorado Springs, 

 Aug. 18, 2 9. Manitou, Colorado, Aug. 16, 3 d", 2 9. Garden of 

 the Gods, Colorado, Aug. 17 and 19, 3 c^, 3 9 . Roggen, Weld Co., 

 Colorado, Aug. 24, 1 9 . Aki'on, Washington Co., Colorado, Aug. 24, 



With this extensive series before me, I am unable to separate Bruner's 

 scudder i and occidentalis. The characters given by him in his key of 

 the species of this genus ^ do not appear to be constant, as specimens 

 from the type locality (Garden of the Gods) cannot be separated from 

 others from the supposed range of occidentalis (Salt Lake City, Grand 

 Junction and Antlers), while a sufficient series from any one locality 



» Bull 94, Colo. Agr. Exp. Sta., p. 58, 1904. 



