364 lOHKEUMOXIB-^. 



glabrous, witli distinct notauli ; metauotum usually with two 

 transverse carince, sometimes centrally obsolete, and rarely with 

 the discal areae entire. Scutellum, at least basally, carinate at the 

 sides. Abdomen strongly compressed, petiolate, with the basal 

 segment narrow and its spii'acles beyond the centre ; second seg- 

 ment shorter, with deeply impressed thyridii; terebra shortly 

 exserted. Legs elongate and slender, with the tarsi often ])aler. 

 Wings ample, with the basal and discoidal nervures distinctly 

 convergent ; tirst cubital geniculate below, usually witli a distinct 

 7iervelet ; parallel nervure emitted above ; nervellus intercepted at 

 or below its centre ; tirst abscissa of radius basally curved and 

 longer than the recurrent nervure in hind wing. 



Range. World-wide. 



One or two species, described by the older authors under this 

 generic name, are still treated of here, though their true position, 

 at present unknown, is certainly elsewhere. 



Table of Species. 



1 (20) Thorax and head not entirely black. 



2 (19) Antenuie not entirely black. 



3 (10) Second recurrent nervure not emitted 



opposite apex of basal radial abscissa. 



4 (9) Second recurrent emitted be tore apex 



of basal radial abscissa. 



5 (8) Petiolar area not laterally carinate ; 



length over 15 millim. 



6 (7) Apophyses normal, not elonp'ate .... lutcus, L., p. 365. 



7 (0) Apophyses both acute and elongate . . dentatus, Smith, p. 366. 



8 (5) Petiolar area entire and discrete ; length 



under 15 millim cireolatus, Cam., p. 360. 



9 (4) Second recurrent emitted beyond apex [p. 3()7. 



of basal radial abscissa hicarinatiis, Cam., 



10 (3) Second recurrent emitted opposite apex 



of basal radial abscissa. 



11 (16) Head posteriorly normal. 



12 (13) Basal nervure continuous : inner cubital 



basally straight carinatus, Cam., p. 368. 



13 (12) Basal nervure not continuous; internal 



cubital nervure basally cur\'ed. 



14 (15) Mesonotuni iu)t infuscate ; scutellum 



basally carinate asiaticus, Kok., p. 360. 



•15 (14) Mesonotum discally infuscate ; scu- [p. .369. 



tellum not carinate fuscoynaculatus, Cam., 



1() (11) Head posteriorly buccate. 



17 (18) Head, thorax and abdomen broadly [p. 370. 



white-marked alhopictm, Smith, 



18 (17) Head, thorax and abdomen not white- 



marked qudtacns{s,0-Am..,-p.?>71. 



19 (2) Antenna} entirely black (/ey/crator, F., p. 371. 



20 (1) Thorax and head entirelv black trianyularemnculatm, 



[3Iots., p. 372. 



It is hoped that the above table -will be found of use in the- 



