SCUDDER. — THE GENUS SCHISTOCERCA. 459 



stripe, the rest of the disk fuscous, the hxteral lobes ferrugineo-testaceous, 

 uumarked, or at most feebly clouded with fuscous ; prozona produced and 

 atigulato-rotuudate in front, as long as the metazona, which enlarges but 

 little, is narrower than at the eyes and posteriorly rectangulate and nar- 

 rowly rounded. Prosternal spine moderate, conical, blunt, feebly retrorse. 

 Tegmina much surpassing the abdomen, immaculate or very faintly and 

 most obscurely clouded with fuscous, ferrugineo-testaceous, the anal area 

 lutescent ; wings vitreous with luteous veins. Fore and middle femora 

 not enlarged ; hind femora ferrugineo-testaceous, with hoary outer face ; 

 hind tibine ferruginous, the spines luteous with black tips. Male cerei 

 subec^ual, fully half as long again as broad, a little obliquely truncate 

 apically, the lower posterior angle distinctly produced and rounded ; sub- 

 genital plate scaphiform, subacuminate, apically fissate to the base, the 

 fissure closed. 



Length of body, 31 mm. ; autennte, 13 mm. ; tegmina, 28.5 mm. ; hind 

 femora, 18 mm, 



3 ^. Venis Mecas, Mexico, Jan. 6, Palmer; San Mateo del Mar, 

 Tehuantepec, in lagoons, Feb., Sumichrast. 



The description is based mainly on the Mexican specimen, and the 

 others may possibly not belong here. All have been immersed in alcohol. 



18. Schistocerca australis nom. nov. 



Acridium occidentale Scudd.!, Proc. Bost. Soc. Nat. Hist., XII. 3.30 (1869). 

 Acridium {Schistocerca) occidentale Scudd., Loc. cit., XVII. 274 (1875). 



The name is here changed, as the name occidcntalis was given by 

 Thunberg to another species of Schistocerca, placed by liim in Gryllus ; 

 see No. 4, above. 



I have specimens before me from Rio de Janeiro, U. S, Expl, Exp., 

 Thayer Exp., Mrs. Davis (Mus. Comp, Zool.) ; Brazil, Linden (Mus, 

 Comp. Zool.); Santarem and Cudais, Brazil, Thayer Exp. (Mus. Comp. 

 Zool.) ; Paramaribo, Dutch Guiana, Richardson (Mus. Comp. Zool.) ; and 

 the Napo or Maranon River, eastern Peru. 



19. Schistocerca gulosa sp. nov. 



Large and bulky, ferrugineo-testaceous. Head large, ferrugineo- 

 testaceous, obscurely marked with fuscons and especially with a pair of 

 very divergent stripes on the vertex ; frontal costa subequal, faintly 

 broadening below, sulcate below the ocellus ; eyes much longer than the 



