IlRMfPTEKA IIETEUOPTERA 1375 



Genus 41. PRIONACA, C.II.2'.n. 

 1. Prionaca lata, C. H. 291. 

 «. Silbet. From Mr. Slainfonh'a collection. 



2. Peioxaca tortuosa. 



Testacea, ovala, rude fusco punclata ; caput Iricarinatum, lobis Inle" 

 ralibus lobum medium siiperantibus ; anlenna; fiilvce, corporis dimidio 

 vix breviores ; thorax ruyis vonnullis anticif (jlabris indeierminatix, 

 spinis laterulibus longis robustis ; abdomen dorso fiisto, spina venlruli 

 coxas posticus atlingente ; membrana cincrea, venis fuscis tortuosis. 



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

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

 lobes extending beyond the middle lobe. Rostrum extending to the hind 

 coxEe. AntenuEe tawuy, nearly half the lengtli of the body ; first joint not 

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

 rugulose spaces near the fore border ; hiud angles forming two long stout 

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

 ventral spine extending to the hind coxae. jNlembrane of the fore wings 

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

 reous. Length of the body 5^ lines. 



The veins in the membrane of the fore wings sufTiciently distinguish 

 this species from P. lata. 



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



3. Prionaca tauricoenis. 



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

 giusculuni, Inbis laleralibus lobum medium perpaullo superantibus ; 

 antcnnce rufcscentes, grariles, corporis dimidio longiores ; thorax 

 spinis duabus lateralibus longis validis snbobtiguis postice dentulis ; 

 scutelluni sat magnum ; spina venlralis coxas posticus attingens ; 

 membrana cincrea, venis fuscis bene determinatis. 



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 coxse. 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 stont acute slightly oblique spines, which are dentate on 

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

 to the hind coxae. Legs stout ; tibiae slightly furrowed. Membrane of the 

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

 5—bh lines. 



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

 species. 



a. Sumatra. From Sir Stamford Raffles' collection. 

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



