Mr. F, Walker on undescrihed Species of Homoptera. 305 



beneath, as long as the thorax. Prothorax transverse, short, with two 

 keels. Mesothorax small. Legs short, broad ; femora and tibiae with 

 a few spines. Fore wings opake, rather narrow, roimded at the tips, 

 with numerous ramifying veins and with many transverse veinlets ; 

 costa very slightly convex ; interior border straight. 



Zamlla is nearly allied to Prolepta, and has more affinity to P. 

 tuherctdata than to P. apicalis, which is the typical species of that 

 genus. P. ohscumta and P. tuhermlata are sufficiently distinct from 

 the type to form two new genera. 



Zamila lycoides (PL XV. f. 3). 3Ias. FiUva, nitens, sublfevis ; caput 

 picemn ; alse auticas nigi-o punctatoe, costa apicibusque nigi-icantibus ; 

 posticfe obscm-e cinerese. 



Male. Tawny, shining, nearly smooth, paler beneath. Head piceous, 

 except at the base. . Fore wdngs with many minute black points, 

 blackish along the costa and towards the tips. Hind wings dark 

 cinereous. Length of the body 5 lines ; of the wdngs 10 lines. 



Siam. 



Genus Poiocera, Laporte. 



PoiocERA FissiLUNA. Mas. Nigra; caput thorace angustius, vertice 

 maculis quatuor flavescentibus, fronte transversa tricarinata subpunc- 

 tata ; thorax maculis plm-imis flavescentibus ; abdomen subtus ochra- 

 ceum ; alte anticaj maculis tribus costalibus guttisque pmictisque 

 plurimis discalibus flavescentibus, spatio apicali sordide ochraceo 

 punctis albidis ; posticfe uigrse, limula alba venis nigris intersecta. 



3Iale. Black. Head narrower than the thorax; vertex -with four 

 yellowish spots ; front about twice as broad as long, minutely punc- 

 tured, with three slight keels ; middle keel emitting a short branch on 

 each side ; lateral keels curv-ed, verj^ oblique. Thorax with nimierous 

 yellowish spots. Abdomen ochraceous beneath. Knees tawny. Fore 

 wings with nmnerous yellowish dots and points, and with three yellow- 

 ish nearly equal costal spots ; apical part duU ochraceous, with several 

 whitish points. Hind wings black, wdth an exterior discal lunulate 

 white streak, which is intersected by the black veins. Length of the 

 body 7 lines ; of the wings 20 lines. 



Rio Janeiro. 



Genus Hestictjs. 



3Ias. Caput thorace angustius ; vertex carinatus, subquadratus, 

 submarginatus ; frons plana, supra carinata subconvexa. AntennaB 

 longfB, lineares. Prothorax transversus, arcuatus, verticem ex parte 

 obtegens. Mesothorax planus, tricarinatus, postice acutangulatus. 

 Abdomen lougiconicum. Pedes sat graciles, femoribus tibiisque ap- 

 pressis carinatis, femoribus tibiisque anticis dilatatis. Alaj hyalin£e ; 

 anticje liueis duabus e venidis transversis, 



Male. Head narrower than the thorax ; vertex nearly square, with 



'z2 



