LIST OF HOMOPTF.ROUS INSECTS. 



16. Pterygia exaltata, Fern. 



Niyra ; prothorax asperus,punctatus, spinosus, guinque-cnmutus ; 



cornua dua antica majora erecla parallela ; cornu posticum 



abdomen superans, Iricarinatum, ferrugineo varium ; tarsi 



fiavi ; altB antica; fuscce, ferrugineo guttata;, apice alhido 



maculatai ; alee pnstica cinereie. 



Black : face conical, concave : eyes large : fore-chest very 



roughly punctured, beset with short spines, with a slight ridge in 



front, armed above the head with two oblong, upright parallel horns 



which are convex on the outer side and concave on the inner side ; 



behind thera there is a smaller horn, and a still lower one rises at 



one-third of the distance between the latter and the tip ; hind part 



convex, spindle-shaped, extending beyond the tip of the abdomen, 



with three ridges, partly ferruginous : "tarsi yellow: fore-wings dark 



brown, roughly punctured for half the length from the base, with 



some ferruginous dots in the disk, and a whitish spot at the tip ; 



hind-wings gray. Length of the body 2 lines ; of the wings 3 lines. 



a. Brazil. Presented by John Miers, Esq. 



17. Pterygia varia. 



Ferruginea ; prothorax fiavus, ferrugineo varius, hicornutus, fascia 

 obliqua Jlavo-alha utrinijue ornatus ; cornu anticum supra 

 caput erectum, apice dilatatum ; cornu posticum abdomen su- 

 perans, compresswn, serratum, subundulatum ; pedes fulvi ; 

 al<e anticee fulvo -varia;. 

 Body ferruginous : front transverse, with an indistinct middle 

 ridge, slightly convex on each side, very concave where it joins the 

 epistoma, its length rather more than half its breadth ; epistoma con- 

 vex in front, a little dilated on each side, a little longer than broad : 

 fore-chest yellow, ferruginous licre and there, armed above the head 

 with a short horn which is curved backward, .slightly compressed at 

 its base, widened and quadrilateral at its tip where the compartments 

 are semi-ovate and slightly concave ; behind it and a little beyond 

 its tip is an upright conical protuberance ; from thence a compressed 

 .serrated and slightly undulating horn extends beyond the tip of the 

 abdomen ; an oblique yellowish-white band extends from the fore- 

 chest to the breast on each side between the eye and the shoulder 

 where there is a large yellow knob: legs tawny; fore-wings lan- 

 ceolate, punctured, ferruginous, partly tawny: hind-winns almost 

 colourless. Length of the body \\ line; of the wings 2 lines. 

 a. Columbia. From Dr. Cuming's collection. 



