308 Mr. F. Walker on undescribed Species of Homoptcra. 



mesothorax planus, nigro bivittatus; alao anticae subrugulosae, nigro 

 punctata?, striga obliqua fnscescente. 



Male. White. Head above more than twice as broad as long, 

 much 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 ou each side. 

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

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

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

 a little in front of the tip ; transverse veinlets irregular, very numerous ; 

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

 undulating 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 Issrs, Fabricius. 



Issus lineolatus. Sordide fulvescens, nigro notatus ; vertex minimus ; 

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

 brevissimus ; ahe anticse luridse, apice rotundatae, striga obliqua albida, 

 costa convexa pallido bimacidata, margine exteriore subobliquo, angido 

 interiore producto, venis nigris ex parte runs. 



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

 very 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 part 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 j tips rounded ; exterior border slightly oblique ; 

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

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



Moreton Bay. 



( Genus Hemisphjeritjs, Schaum. 



Hemisph^erius cassidoides. Mas. Fulvus, nitens; caput submar- 

 ginatum ; frons angusta, antice latior ; prothorax parvus, lunulatus ; 

 alae anticse latae, semihyalinae, subpunctatae, abdomen superantes. 



Male. Tawny, shining. Head with a slight rim on each side; 

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

 hmulate, 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 G lines. 

 Siam. 



Hemisphjerius chilocoroides. Mas. Niger, subtus testaceus ; vertex 

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



