308 Mr. F. Walker on undescribed S2}ecies of Homoptera* 



mesotliorax planus, nigro bivittatus; alee anticse subrugulostie, nigro 

 punctatoe, striga obliqua fuscescente. 



3Iale. White. Head above more than twice as broad as long, 

 mucb rounded in front, furrowed in the middle, with two slight ridges ; 

 fore border mostly black ; front longer than broad, with a middle ridge 

 which is abbreviated in front, and with a slight rim on each side. 

 Prothorax short, with a black stripe, dilated into a spine on each side. 

 Mesothorax ilat, with a black stripe on each side. Fore wings slightly 

 rugulose, with some black points which are mostly along the borders ; 

 a brownish oblicLue streak extending from the hind part of the disk to 

 a little in fi'ont of the tip ; ti-ansverse veinlets irregular, very numerous ; 

 costal space especially broad towards the base, where it is very convex, 

 undulatmg along the inner side, with numerous regular and parallel 

 transverse veinlets. Length of the body 5 lines ; of the wings 14 

 lines. 



Rio Janeiro. 



Genus Isstts, Fabricius. 



IssTJS LiiOiOLATUS. Sordide fulvescens, nigro notatus ; vertex minimus ; 

 frons longissima, marginata, tricarinata, faciem versus latior ; thorax 

 brevissimus ; alee anticse luridae, apice rotundatae, striga obliqua albida, 

 costa convexa pallido bimaculata, margine exteriore subobliquo, angulo 

 interiore producto, venis nigris ex parte rafis. 



Pale dingy tawny, marked with black. Vertex very small ; front 

 veiy long, widening towards the face, with a rim on each side, and with 

 three ridges. Thorax very short. Fore border of the prothorax an- 

 gular, extending over pax't of the vertex. Fore wings lurid, with two 

 pale spots on the exterior part of the costa, and with a whitish discal 

 streak which extends from the base to half the length of the interior 

 border ; costa convex ; tips roimded ; exterior border slightly oblique ; 

 interior angle prominent ; veins black, irregidar, partly red about the 

 borders. Length of the body 3 lines ; of the wings 8 lines. 

 Moreton Bay. 



Genus Hemisph^eitjs, Schaum. 



Heiusph^bius cassidoides. 3Ias. Fulvus, nitens; caput submar- 

 ginatum; frons ang-usta, antice latior; prothorax parvus, limulatus ; 

 alfe antica) lataj, semihyalinae, subpimctatse, abdomen superantes. 



link. Ta^vaiy, shining. Head with a slight rim on each side; 

 front longer than broad, widening towards the face. Prothorax small, 

 lunulate, much narrower than the head. Mesothorax with a puncture 

 on each side. Fore wings broad, semihyaline, minutely punctured, 

 extending beyond the abdomen ; exterior border convex. Length of 

 the body 2^ lines ; of the wings 6 lines. 



Siam. 



HEMiSPHiERius CHILOCOROIDES. 3Ias. Niger, subtus testaceus ; vertex 

 albido marginatus; frons longissima, rufo vittata, albido marginata; 



