50 



IscHNOPTERA, Bumieister. 



Handb. II., 500 ; Br., Syst, 128, fig. 12-13. 



" Body of male oblong, of female rounded. Antennae twice as 

 long as the body. Pronotum small, orbicular, leaving the head 

 free. Elytra pellucid, veins distinct ; radial vein emitting 

 parallel branches ; anal vein ending a little before the middle in 

 the hind margin ; axillary veins 6-8. Wings hyaline, ulnar vein 

 emitting pinnate branches towards the anal vein, and others 

 directed towards the apex. Subgenital lamina of male with long 

 styles. Cerci long, twelve-jointed. 



These insects are very agile in their movements, and mostly 

 diurnal in habit in Australia. Some species hunt for their prey 

 among the foliage of shrubs, others are found under loose bark, 

 &c., but few, if any, occur in human habitations. . As indicated 

 by the name (thin-winged), the genus is remarkable for the 

 delicate texture of the organs of flight, their colour being chiefly 

 due to that of the veins. The elytra possess apparently no 

 transverse veinlets. but the membrane is greatly strengthened by 

 fenestrate corrugations l^etween the veins, producing a regularly 

 reticulate appearance. The wings, however, have real, although 

 few, transverse veinlets. 



( Ischnoptera centralis, Walk. See Apolyta.) 



IscHNOPTERA AUSTRALiCA, Bruiiiier (Syst., 131). 

 (? /. marginalis, Walker, Brit. Mus. Cat. Suppl., 145). 

 Fulvous ferruginous. Head large, eyes remote. Pronotum 

 almost flat, disk impressed. Wings with foremargin yellowish 

 opaque ; apex brownish, radial vein dichotomous, ulnar vein 

 emitting branch " 5 " into the apical border and branch " 3 " 

 towards the anal vein. 



Male. 

 Length of body ... ... ... ... 20 mm. 



Length of elytra .. . ... ... ... 22 " 



Length of pronotum ... ... ... 5 " 



Width of pronotum ... ... ... 7 " 



Habitat. — New South Wales." 



Ischnoptera marginalis, Walker (Brit. Mus. Cat., 119). 

 " Testaceous, smooth. Head and pronotum pale red. Head 

 small, face pale yellow ; sockets of antennae whitish, eyes wide 

 apart. Antennas tawny, setulose, pale yellow at the base. Pro- 

 notum pellucid, slightly deflexed, hindmargin slightly rounded. 

 Abdomen blackish yellow beneath, bordered with whitish. 

 Elytra subcinereous, with a white costal stripe tapering to the 

 apex. Wings blackish, costa white, except near apex. 



