460 PROCEEDINGS OP THE AMERICAN ACADEMY. 



• 

 iufraocular portion of the gense ; antennte rufous. Pronotum well arched, 

 in no way tectate, but with a distinct though slight median carina, ferru- 

 gineo-testaceous, the front edge narrowly fuscous, the disk with exceed- 

 ingly obscure infuscation, leaving a clear dorsal stripe scarcely perceptible, 

 the lateral lobes obscurely mottled with fuscous and with a mesial longi- 

 tudinal fuscous stripe ; prozona produced and rounded anteriorly, a little 

 shorter than the metazona, which broadens considerably behind so as to 

 be very much broader than at the eyes, and is obtusangulate, the angle a 

 little rounded. Prosternal spine rather small, erect, subconical, blunt. 

 Tegmiua extending far beyond the abdomen, moderately broad, ferru- 

 gineo-testaceous, fiiintly feebly and sparsely maculate with fuscous in 

 one- or two-celled jiatches ; wings vitreous with a faint citron hue basally, 

 all the veins luteous or ferruginous. Hind femora ferrugineo-testaceous, 

 the outer face ivory white, the carinaj punctate with fuscous ; hind tibiai 

 dull purplish, the spines luteous with black tips. 



Length of body, 52 mm. ; tegmina, 51 mm. ; hind femora, 28.5 mm. 



1 9 . Demerara, British Guiana. 



20. Schistocerca bogotensis sp. nov. 



Below the average size and not very stout, ferrugineo-testaceous, much 

 infuscated. Head moderately large, ferrugineo-testaceous, the frontal 

 costa much infuscated, especially at the margins, whence a fuscous stripe 

 proceeds on either side backward across the vertex, leaving a broad sub- 

 ferruginous median band; frontal costa subequal, sulcate below the 

 ocellus ; eyes considerably longer than the iufraocular portion of the genae. 

 Pronotum well arched, in no way tectate, but with a sharp though slight 

 median carina in the middle of a broad subequal, but on the metazona 

 slightly attenuated, subferruginous stripe, the rest of the disk deeply in- 

 fuscated, the lateral lobes ferrugineo-testaceous, blotched with fuscous and 

 testaceous, but not longitudinally striped ; prozona a little shorter than 

 the metazona, a little and roundly produced anteriorly, the metazona but 

 little enlarged and hardly exceeding the width at the eyes, posteriorly 

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

 erect, subconical, blunt. Tegmina extending well beyond the abdomen, 

 moderately broad, testaceous, maculate with fuscous in the median area, 

 the maculations in distal half obscurely massed in broad oblique bands; 

 wings citriuo-infumate, without maculations. Hind femora ferrugineo- 

 testaceous, the outer face dull ivory white ; hind tibiie vinous, the spines 

 vinous with black tijDS. 



