458 PROCEEDINGS OF THE AMERICAN ACADEMY. 



10. Schistocerca sequalis sp. nov. 



Of fair size and moderately slender, fusco-testaceous. Head moderately 

 large, fusco-testaceous, the vertex fuscous except a broad median ferru- 

 gineo-luteous band ; frontal costa subequal, sulcate below the ocellus ; 

 eyes rather prominent, very much longer than the iufraocular portion of 

 the geuse ; antennae at least a third longer than the head and pronotum 

 together, ferrugineo-luteous. Prozona well arched, in no way tectate, 

 but with distinct and delicate percurrent median carina, in the middle of 

 a rather broad and equal percurrent ferrugineo-luteous stripe, the rest of 

 the disk fuscous, the lateral lobes fusco-testaceous, with an oblique inferior 

 fuscous stripe, below which they are testaceous ; prozona roundly produced 

 anteriorly, about as long as the metazona, which enlarges but slightly and 

 is narrower than at the eyes and jjosteriorly rectangulate or perhaps faintly 

 obtusangulate, the angle rounded. Prosternal spine rather long, erect, 

 cylindrical, bluntly tapering apically. Tegmina extending well beyond 

 the abdomen, slender, immaculate, ferrugineo-testaceous, the costal and 

 anal areas testaceous ; wings very faintly infumate with a slight citron 

 tinge. Fore and middle femora not enlarged ; hind femora rather slen- 

 der, slightly surpassing the abdomen, ferrugineo-testaceous, the outer face 

 hoary, feebly punctate with fuscous on the carince; hind tibiae dull pur- 

 plish or ferruginous, the spines luteous with black tips. Male cerci sub- 

 equal, about half as long again as broad, inbent at the middle, apically 

 angularly emarginate above the middle, the lower lobe projecting ; sub- 

 genital plate short scaphiform, almost haustrate, apically U-shaped, the 

 emargination deeper than broad, and the angles subacute. 



Length of body, 35 mm.; anteunje, 13.25-1- mm.; tegmina, 36 mm.; 

 hind femora, 19 mm. 



2 (J . Demerara, British Guiana. 



17. Schistocerca maya sp. nov. 



Below the medium size and moderately slender, testaceous, more or less 

 infuscated. Head moderately large, ferrugineo- or luteo-testaceous, the 

 vertex with a pair of fuscous stripes bordering a ferrugineo-luteous median 

 band ; frontal costa subequal, sulcate at and below the ocellus ; eyes 

 moderately prominent, much longer than tlie infraocular portion of the 

 genfB ; antennae more than a third longer than the head and pronotum 

 together, ferruginous. Pronotum well arched, in no way tectate, with a 

 delicate median carina in a (sometimes obscured) ferrugineo-luteous dorsal 



