458 GEOLOGICAL SUEVEY OF THE TEERITOEIES. 



of CE. corrallipes, I am satisfied, after a thorough examination the pres- 

 ent year of a number of specimens, is quite distinct, the head alone 

 being suflQcieut to distinguish the one from the other. 



CS. Carolina, Serv. 



Syn., Gryllus (Locusta) CaroUnus, Linn.; Gryllus Carolinus, Fabr. ; Acrydiuvi Caro- 

 linum, Deg. ; Acrydiwm Carolinianum, Pal. de Beauv. ; Locusta Carolina, Harr. ; 

 Locusta CaroUniana, Catesby. 



I have found this species in all parts of the West that I have visited, 

 but never in great abundance. The specimens from the plains are gen- 

 erally a paler ash-color than those found east of the Mississippi. Walker 

 (Oat. Dermap. Salt.) gives Yancouver's Island as a locality where it is to 

 be found. If he is correct in this, then we need evidence only in regard 

 to Southern Arizona and California to show that it is found throughout 

 the United States. 



(E. Sul/pJmrea, Burm. 



Syn., Gryllus sulphureus, Fabr. ; Acridinm sulpTiureum, Olir. ; Locusta sulpJmrea, 

 Harr. ; Tomonotus sulphureus, Sauss. ; Gryllus (Locusta) sulphureus, Gmel. 



I did not meet with this species either in the Salt Lake Basin or 

 Snake Eiver Valley, but I have specimens from California which appear 

 to belong to it, but they are rather too much damaged for me to decide 

 positively. Walker (loc. cit.) gives Vancouver's Island and the west coast 

 of North America as places where it is to be found. The specimens I 

 have from California appear to be somewhat intermediate between Sul- 

 2)hurea and Xanthoptera, except that the size is rather small. 



(E. sordida, Burm. (Handb. Ent., II, G43.) 



Syn., Locusta periscelidis, Say, (in Harr. Cat. Ins. Mass., 56,-) Locusta nehulosa 

 (Harr. Rep., 181 ;) Amdium sordidum, De Haan, (Kenn. Ortliop., 143 ;) CEdipoda 

 n-eiulosa, UhL, Harr. Eej)., 181 ;) CEdipoda sordide, Walk., (Cat. Dermap. Salt., 

 IV, 732.) 



I did not meet with this species west of or even at the east base of 

 the mountains, but find it among the collections made by Mr. C. R. 

 Dodge, in Nebraska. 



(E. atrox, Scudd., (Hayden's Geol. Surv. Neb., 253.) 



This is the destructive species of Ca.lifornia, and notwithstanding the 

 fact that its wings are scarcely longer than its abdomen, yet it is able 

 to sustain itself in the air for a considerable flight. I do not think it can 

 fly any great distance, except with the wind, which bears it along. 

 But it seems surprising that it should even be able to do this. Those 

 who live in the east and have not seen a specimen of this species, can 

 see it almost, if not exactly, represented in (E. pelhicida of Scudder ; in 

 fact, Mr. Scudder's description of this species agrees more exactly, if possi- 

 ble, with specimens from California submitted to me this season than 

 his description of atrox. The only difference I can find between the 

 two is that the median carina of the pronotum in atrox is severed by a 

 transverse incision, while that of pellucida is entire. The examination 

 of more specimens of the two species than I had before me may show 

 that even this difference is not permanent. Had Mr. Scudder found in- 

 dividuals of the two species in the same locality, I do not think he 

 would ever have thought of describing two species therefrom, yet that 

 does not prove that he is in error, for the widely different habits and 

 the widely separated localities at which they are found are sufficient to 



