672 CATALOGUE OK 



37. Hexeracbis mundata. 



Mas. Testacea, gracilis ; caput el piolhorax suhtiliter scabra, piceo 

 bivillala ; fastigium subrkomboidale ; antennce graciles, apice versus 

 nigrcE ; prothoracis carina media vix conspicua; prosterni spina 

 gracilis, longiuscula, acuta ; tibice posticce apices versus pallide 

 virides ; alee anticce pallide cinerca, corpori aquilongcB. 



Male. Testaceous, slender. Head and prolhorax finely scabrous, 

 wilb two piceous stripes, which are interrupted by the eyes. Tip of the 

 vertex flat, somewhat rhomboidal ; keels of the front strongly marked; 

 inner keels parallel ; outer keels diverging towards the face. Eyes lurid, 

 elliptical. Antennae slender, black towards the tips. Prothorax with the 

 lateral keels sharply defined; middle keel hardly apparent; transverse 

 impressed lines distinct; fore border straight; sides and hind border 

 slightly rounded. Prosternal spine slender, acute, rather long. Hind 

 femora a little longer than the abdomen; hind tibiae much shorter than the 

 hind femora, pale green towards the tips, their spines with black tips. 

 Fore wings pale cinereous, as long as the body; veins testaceous. Hind 

 wings pellucid; veins black, pale blue at the base and along the interior 

 border. Length of the body 8|^ — 9 lines; expansion of the fore wings 

 20—21 lines. 



Nearly allied to H. tenuis, from which it may be distinguished by the 

 blue basal veins of the hind wings. 



a, b. Port Essiiigton. From Mr. Gould's collection. 



Group 2. 



Mas. Corpus gracillimum, fere cylindricum. Caput longum ; fas- 

 tigium planum, fere cllipticum ; frons retracta, quadricarinata. Oculi 

 ohliqui, uon prominuli. Antennae graciles, capiti et prothoraci ad unum 

 Ecqiiilongae. Prothorax suhtiliter scaber, siibtricarinatus ; discus fere 

 planus, margine postico subrotundato. Prosterni spina transversa, 

 incrassata, exeavata. Abdomen subcompressum. Pedes graciles ; feinora 

 postica abdomini sequilonga. Alaj anticac angustae, abdomini aequi- 

 longEe. 



Male. Body very slender, nearly cylindrical. Head long, smooth ; 

 tip of the vertex depressed, nearly elliptical ; front thinly punctured, some- 

 what retracted, with four slight keels; inner keels parallel; outer keels 

 diverging much towards the face. Eyes elongate-elliptical, oblique, not 

 prominent. Antennae slender, as long as the head and the prothorax 

 together. Prolhorax finely scabrous, hardly widened hindward ; disk 

 nearly flat; three slight keels; transverse impressed lines distinct; fore 

 border straight; sides hardly rounded; hind border slightly rounded. 

 Prosternal spine transverse, very thick; its apical part much excavated, 

 notched on the hind side. Abdomen slightly compressed. Legs slender ; 

 hind femora as long as the abdomen ; hind tibiae nearly as long as the hind 

 lemora. Fore wings narrow, as long as the abdomen. 



