ac.t:xixus. 41 



Table of Species. 



1 (4) Head and thorax black ; inetanotuiu 



fully costate. 



2 (3) Wiiijrs with substigmal cloud ; hind 



tibifB pale red (/ramlipes, sp. r., p. 4L 



3 (2) "Wings with no cloud ; hind tibi;e 



black (decto, sp. u., p. 42. 



4(1) Head and thorax iiavous ; metanotuni 

 only basally costate. 



5 (6) Xervelet wanting ; metanotuni gla- 



brous xanthorius, sp. n., p. 43. 



6 (5) Xervelet distinct ; metanotuni roughly 



punctate hiumhratus, sp. n., p. 44. 



10. Acsenitus grandipes, sp. n. 



2 , A handsome black species ^vith pale-banded antenna) and 

 body, spotted wings, and fulyidous legs. Head stout, with the 

 distinctly bordered occiput narrower than the internally entire 

 eyes ; vertex smooth, with a few isolated punctures, frons gla- 

 brous and very strongly carinate to the rugose and white face ; 

 frontal and external orbits, cheeks, and the apically truncate 

 clypeus white ; mandibles black, strongly striate, and apically 

 attenuate. Antennce filiform throughout, black, with the ninth 

 to twenty-second flagellar joints, and the scape beneath, white ; 

 apices ferruginous and abruptly obtuse. Thorax black, unevenly 

 punctate, with short white pilosity ; mesonotum somewhat dull, 

 discall}' rugose, with its notauli deeply impressed and their 

 central lobe vertical ; metathorax strongly costate, with the 

 areola small and exactl}' quadrate; petiolar area reaching bevond 

 centre, laterally sinuate, apically glabrous, and basally trans- 

 aciculate ; lateral arete irregularly costate ; apophyses obtuse ; 

 spix-acles large and linear, circumcostate. ScuteUaui black, with 

 a few large punctures, laterally carinate to the centre, with its 

 basal fovea bicarinate and its extreme apex obscurely testaceous ; 

 postscutellum glabrous and entirely stramineous. Abdomen nar- 

 rower than the thorax, nitidulous and subim punctate, with the 

 apices of all the segments broadly flavous ; basal segment sparsely 

 and longitudinally punctate laterally, with the spiracles before its 

 centi-e : gastrocceli foveiform ; venter flavous, with the hvpo- 

 pygium si)inous and extending over the base of the centrally 

 testaceous terebra to beyond the pygidium ; terebra longer than 

 the abdomen. Leys : anterior pair entirely stramineous, with the 

 apices of the onychii and of the bifid claws alone infuscate ; 

 hind legs fulvous with the coxae, apices of trochanters, of femora, 

 of the curved tibine and extreme base of the last, black ; coxie 

 internally above, base of trochanters, and the tarsi, except their 

 simple claws, white. Wiiigs infuscate-hyaline, with a mark below 

 the black stigma and the apices of both pairs distinctly infumate ; 

 radix testaceous, tegula) white, nervelet obsolete; the bifenestrate 

 second recurrent nervure intercepting the cubital, but slightly 



