HRMIPTEUA HETEUOrXEUA 



Genus 41. rillONACA, C. //. 2!)1. 

 1. Prionaca lata, C.H.2{)\.. 

 a. Silliet. From Mr. Stiiiuforih's collection. 



2. Peioxaca toriuosa. 



Testacea, ovata, rude fiisco punctata ; caput liicariiiatum, lubis laic- 

 ralibus Inbum mrdiuin superantibus ; anteniut fulva, corporis diniidio 

 vix breviorcs ; thorax niqis nonmdlis antici': (/lubris ivdctenniriulis, 

 spinis lalernlibus lonc/is robustis ; abdomen dorso fu>i<o, spina ventrali 

 coxas posticas attingente ; membrana cincrea, veriis ftiscis tortuosis. 



Testaceous, oval, thickly and roughly punctiued ; punctures and some 

 of the iutervening spaces brown. Head with three slight keels; lateral 

 lobes extending beyond the middle lobe, llostrum extending to the hind 

 coxae. Antennffi tawny, nearly half the length of the body ; first joint not 

 extending to the front of the head. Thorax with some smooth slijjhtly 

 rugulose spaces near the fore border; hind angles forming two loirg stout 

 acute spines, which are slightly inclined forward. Abdomen brown above; 

 ventral spine extending to the hind coxas. Membrane of the fore wings 

 cinereous, lurid at the base ; veins brown, undulating. Hind wings cine- 

 reous. Length of the body Hh lines. 



The veins in the membrane of the fore wings sufficiently distinguish 

 this species from P. lata. 



a. Sarawak. Presented by W. W. Saunders, Esq. 



3. Prionaca taukicornis. 



Testacea, lata, ovata, aspere punctata, fuscn dense conspersa ; caput lon- 

 giusciilum, Inbis lateralibus lobiini medium perpaullo superantibus ; 

 anlenntc rufescentes, grarilcs, corporis dimidio longiores ; thorax 

 spinis dunbus lateralibus longis vaiidis subobliquis postice dcntutis ; 

 scutelluni sat magnum ; spina venlralis coxas posticus atiingens ; 

 membrana cinerea, venis fuscis bene delerminutis. 



Testaceous, broad, oval, roughly punctured, thickly speckled with 

 brown. Head elongate ; lateral lobes extending very little beyond the 

 middle lobe. Rostrum extending to the hind coxai. Antennae reddish, 

 slender, more than half the length of the body ; first joint extending nearly 

 to the front of the head. Thorax slightly rugulose in front ; hind angles 

 forming two long stout acute slightly oblique spines, which are dentate on 

 the hind side. Sculeilum rather long and broad. Ventral spine extending 

 to the hind co.\a). Legs stout ; tiliia; slightly furrowed. Membrane of the 

 fore wings cinereous ; veins brown, strongly marked. Length of the body 

 5 — 6j lines. 



The spines of the thorax are longer tlian those of the preceding 

 species. 



a. Sumatra. From Sir Stamford Raffles' collection. 

 h. ? Presented by W. W. Saunders, Esq. 



