Mr. F. Walker on undescrihed Species of Homoptera. 309 



pedes ex parte testacei; alas auticoe latse, reticulato-punctatse, apice 

 rotundatOB. 



3Iale. Black, testaceous beneath. Vertex whitish-bordered ; front 

 very long, widening towards the face, with a whitish rim on each side, 

 and a red stripe. Legs partly testaceous. Fore wings broad, convex, 

 reticulate-punctured, rounded at the tips ; costa convex, prominent to- 

 wards the base ; interior border straight. Length of the body 2\ lines ; 

 of the wings 5i lines. 



Siam. 



Hemisphjerius scymnoides. 3Ias. Testaceus, nitens; vertex sma- 

 ragdino quadripunctatus ; frons nigro tripunctatus, lateribus subangu- 

 latis ; prothorax smaragdino bimaculatus ; mesothorax vitta maculis- 

 que duabus smaragdinis ; alse anticse subpunctatae, apice rotundatse, 

 guttis duabus posticis nigris. 



Male. Testaceous, shining. Vertex with two emerald-green points 

 on each side ; front slightly angidar on each side, widening towards 

 the face, with three minute black points in front. Prothorax with two 

 emerald-green spots. Mesothorax with a middle stripe and one spot 

 on each side emerald-green. Fore wings moderately broad, minutely 

 punctm-ed, roimded at the tips, with a black dot on each side hindward, 

 costa convex ; interior border straight. Length of the body 2 lines ; 

 of the wings 5 lines. 



Siam. 



Genus Elasmoscelis, Spinola. 



Caput paiTum ; vertex perangustus, margine alto erecto ; frons longa, 

 bicarinata, faciem versus latior. Antennse articulo 3<» longi-conico, 

 seta longa. Thorax brevissimus. Pedes femoribus tibiisque appressis, 

 anticis valde dilatatis. Alse anticse longse, sublineares, apice acutae, 

 costa apicem versus subcontracta, margine exteriore subangulato, angulo 

 interiore rotundato. 



Head small ; vertex very narrow, with a high upright rim on each 

 side ; front long, narrow towards the vertex, with two deep ridges. 

 Third joint of the antenna elongate-conical; bristle longer than the 

 antenna. Thorax very short. Posterior femora and posterior tibias 

 flattened ; fore femora and fore tibiae much dUated. Fore wings long, 

 nearly linear, mostly opake ; costa slightly contracted towards the tip, 

 which forms a prominent right angle ; exterior border slightly angular 

 in the middle ; interior angle rounded. 



Elasmoscelis pereobata. Mas. Flavescenti-alba, nigro conferte punc- 

 tata ; alai anticfB nigrse, macula discali alba, punctis nonnullis albidis, 

 lituris marginalibus hyalinis transversis. 



Male. Yellowish white. Body and legs with numerous black 

 points. Abdomen with a thick white apical cottony mass. Fore 

 wings black, with a white spot in the disk, and with several whitish 



