162 OETHOPTERA. 



Table for separating the Species of Dissosteira. 



A. Larger species. Tegmina and wings much longer than the body in 

 both sexes. 

 b. Wings with the disc largely fuliginous ; the outer border pale. 

 c. Tegmina not distinctly marmorate. The pronotal crest of mode- 

 rate height 1. Carolina, Linn. 



cc. Tegmina very conspicuously marmorate. The pronotal crest 



higher 2. longipennis, Thorn. 



bb. Wings scarcely, if at all, fuliginous [3. spurcata, Sauss.] 



AA. Smaller species. Tegmina and wings but little longer than the body 

 in either sex. 

 b. Wings with the disc some shade o£ red, crossed by a well-defined 

 fuliginous band. 

 c. Larger. Ground-colour inclining to ferruginous. The wing- 

 band fenestrate with light and dark [4. venusta, Stal.] 



cc. Smaller. Ground-colour plain grey. The dusky wing- band of a 



uniform colour [5. pictipennis, sp. n.] 



bb. Wings almost wholly hyaline or vitreous [6. planipennis, sp. n.] 



1. Dissosteira Carolina, Linn. 



Gryllus (Locusta) carolinus, Linn. Syst. Nat. 10th ed. i. p. 433 (1758) \ 



Acrydium carolinum, De Geer, Mem. Ins. iii. p. 491, t. 47. figg. 2, 3 (1773) 2 . 



Gryllus carolinus, Fabr. Syst. Ent. p. 291 (1775) 3 . 



Locusta Carolina, Harr. in Hitchc. Rep. Geol. Mass. p. 583 (1833) \ 



(Edipoda Carolina, Burm. Handb. Ent. ii. p. 643 (1838) 5 . 



Dissosteira Carolina, Scudd. Rep. Chief Eng. 1876, Append. JJ, p. 511 (1876) 8 ; Cat. N.-Am. 



Orthopt. i. p. 36 (1900) 7 ; Sauss. Prodr. CEdip. p. 137 (1884) 8 . 

 (Edipoda (Dissosteira) Carolina, Prov. Faune ent. Canad. ii. p. 39 (1887) 9 . 

 (Edipoda (Hippiscus) Carolina, Caulf. Canad. Orthopt. pp. 12, 13 (1887) 10 . 

 Dissosteira ((Edipoda) Carolina, Towns. Proc. Ent. Soc. Wash. i. pp. 266, 267 (1890) ". 

 Locusta caroliniana, Catesby, Nat. Hist. Carol. &c. ii. p. 89, t. 89 (1743) 12 , 



Hab. North America, generally from ocean to ocean 1-12 . — Mexico, Northern 

 Chihuahua (L. Bruner). 



It is surprising that this species, which is so generally distributed over the adjoining 

 portions of Texas, New Mexico, Arizona, and California, has been overlooked by 

 collectors in Mexico. During the fall of 1887 (November) the present writer saw it 

 along the Mexican Central Railroad just south of El Paso, Texas. 



2. Dissosteira longipennis, Thomas. 



(Edipoda longipennis, Thorn. Rep. U.S. Geol. Surv. Terr. v. p. 463 (1872) l ; Acrid. N. Am. p. 116 

 (1873) \ 



