790 CATALOaUE OF 



1. Hemiachts fervens. 



Mas et foem. Fulva ; vertex nigra unislrigalus ; antennce picea, bast 

 testacecB ; abdomen maris lateribus nigricantibus ; femora poslica 

 inlus nigra, linea maculaque apicali Jlavescentihus ; aim posticce 

 subochracece, apice fuscescentes. 



Male and female. Tawny. Vertex with a black longitudinal streak. 

 Antennae piceous, testaceous towards the base. Abdomen of the male 

 blackish on each side. Hind femora black on the inner side and beneath, 

 with a yellowish line above and a yellowish apical spot on the inner side. 

 Hind tibiae red, their spines with black lips. Hind wings cinereous, with 

 a slight orange tinge, brownish at the tips and along the adjoining part of 

 the exterior border; veins orange. Length of the body 9 — 13 lines; 

 expansion of the fore wings 17 — 22 lines. 



a — d. Natal. From M. Gueinzius' collection. 



Genus 23. MORPHACRIS. 



Foem. Corpus subcompressum. Caput breviusculum ; fastigium 

 longi-conicum, cariuatum ; sulci laterales triangulares; frons non obliqua. 

 Antennae filiformes, graciles, capite et prothorace ad unum vix breviores. 

 Prothorax longiirorsum strialus, carina dorsali bene determinata, margine 

 postico valde producto acute angulalo. Tibiee posticae spinulosse. 



Female. Body slightly compressed. Head rather short; tip of the 

 vertex elongate-conical, with a distinct keel; lateral furrows triangular; 

 front erect, with four well-defined keels which diverge towards the face. 

 Antennae filiform, slender, nearly as long as the head and the prothorax 

 together. Prothorax with a transverse furrow, with a well-defined dorsal 

 keel, and with about six longitudinal ridges on each side; hind part much 

 elongated and acutely angular. Hind femora longer than the abdomen. 

 Hind tibiae a little shorter than the hind femora, their spines very minute. 

 Wings slightly developed. 



1. MOEPHACRIS ADUSTA. 



Foem. Ferruginea ; prothorax nigra bivittatus ; alee cinerecB. 



Female. Ferruginous. Prothorax with a broad black stripe on 

 each side more outward than the longitudinal ridges. Wings cinereous. 

 Length of the body 7i lines. 



a. South Africa. Presented by Sir A. Smith. 



Genus 24. CERACRIS. 



Mas. Corpus gracillimum. Caput longiusculum ; fastigium planum, 

 marginatum, subbexagouale ; sulci laterales triangulares; frons longa, 

 obliqua, quadricarinata, transverse subrugulosa. Antennae filiformes, 

 longa), gracillimac. Prothorax subtricarinatus, margine postico rotundato 

 non producto. Pedes graciles, longiusculi. Alae corpori aequilongae. 



