January, 1902I 



PSYCHE. 



293 



upper Missouri (Hayden), Muscle Shell 

 River (Hitz), N. Pac. R. R. Surv. 

 (Suckley), N. \V. Boundary Survey 

 (Kennerley) ; — British Columbia, Wash- 

 ington, Oregon, and California (the de- 

 tails given in another paper) ; — New 

 Mexico: Ft. Buchanan (Nevin), Santa 

 Fe' (Cockerell), Mesilla Park (Cock- 

 erell). Las Vegas (Cockerell) ; — Texas : 

 Goliad (Palmer), Pecos River (Pope), 

 San Antonio (Palmer), Corpus Christi 

 Bay (Palmer), Ringgold Barracks 

 (Schott). Macropterous specimens are 

 very rare in this species, and have been 

 seen by me only from Massachusetts, 

 Missouri, and Colorado. 



G. domesticus is before me in speci- 

 mens from New York : West Farms 

 (Akhurst); — southern Illinois (Uhler); — 

 Carolina (Schaum) ; — • Georgia : Ross- 

 well (King); — Alabama: Utaw ; — and 

 Texas (Belfrage). All that I have seen 

 are macropterous, but brachypterous 

 specimens occur in the Old World. 



West of the Mississippi and north of 

 Utah, J. ahbreviatus zwA G.pennsylvani- 

 cus (a -, especially the latter) seem to be 

 the only species known. In Kansas, 

 however, another species, G. personatus 

 Uhl., appears, which also extends to 

 Colorado and Texas. It may be dis- 

 tinguished from these species by having 

 the genae of the head and the lateral 

 lobes of the pronotum luteous or testa- 

 ceous instead of black. I have seen 

 specimens from Kansas (Uhler), be- 

 tween Ft. Kearny and 

 (Suckley) ; — Colorado : 

 (Baker in Morse's coU.);- 

 Antonio (Palmer), Eagle Pass (Schott), 

 Pecos River (Pope). Both macropter- 

 ous and brachypterous forms occur, the 

 latter appearing to prevail. 



In the southern Rocky Mountain re- 

 gion (Colorado, Utah, New Mexico and 

 Arizona) four species are found, one of 

 them new and described below. They 

 may be separated by the following table : 



personatus Uhl. 



Ft. Laramie 

 Ft. Collins 

 Texas : San 



a '. Genae and lateral lobes of pronotum light colored. 

 (?^. Genae and whole pronotum black. 



b '. Whole body black, the tegmina sometimes nigro-testaceous ; 5-6 spines on 

 outer side of hind tibiae. 



(-'. Pronotum nearly twice as broad as long. . . . integer Scudd. 



(■-. Pronotum about half as broad again as long. . pennsylvanicus Burni. 



b'-. Tegmina and legs testaceous; 7-8 spines on outer side of hind tibiae 



armatus sp. nov. 

 The distribution of G. personatus has just been given, and that of G. pennsylvankus 

 in an earlier part of this paper in detail. G. integer was described and its distribu- 

 tion given in my paper on the species of Gryllus on the Pacific coast. A description 

 of the species regarded as new follows. 



Grylliii ariiuitus sp. nov. — Small and rath- or not wider than the pronotum, gentiv tiunid, 

 er slender with piceous body. Head scarcely the vertex not very prominent, the whole head 



