28 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



f). Transverse median nervure in hind wings not broken. (IIB) 7''ln/>ii()l(>n(s K(")rster. 

 Transverse median nervnre in hind wings broken. 



Disco-cubital nervrire straight or shghtly curved, but not angularly l)roken. 

 Abdomen scarcely longer than the head and thorax miited, the second 

 segment at apex thrice as wide, or nearly, as long. 



(117) Apdlopii Forster. 

 Abdomen hinger than the head and thorax united, the second segment 

 longer than widc^ at apex; areolet with the sides convergent 

 above. 

 Metathoracic s])iracleH lartre, long elliptical (male) (see p. 29). 



(126) Ph'ciocryptus Thomson. 

 Metathoracic s^nracles small, short oval or subrotund (male) (see 



p. 29) ( 127 ) Microcnjplus Thomson. 



Disco-taibital nervure angularly broken. 



Abdomen elongate, much longer than the head and thorax united, the 

 second segment ■not twice as wide as long, not much more than 



half the length of the segment (118) Panargnrops Forster. 



fi. iVIetathorax regularly areolated, more or less rugolose, or coriaceous, and fre- 

 quently opaque 7 



iVIetathorax areolated, but quite smooth and shining. 



First abdominal segment with dorsal carinee; metathorax wiilifirc areas at 



apex (119) Lcptodermas Fcjrster. 



First abdominal segment 'irltlioid dorsal cariuic; metathorax with //(iw areas 

 at apex (120) Oxi/I.rnia Forster. 



7. Radius oriir'mating before the middle of the stigma; disco-cubital cell at base as 



wide as the second diseoidal cell at apex. . (121) Isotima Fijrster. 

 lladius originating from the middle of the stigma; disco-cubital cell at base 

 nearly tw'ice as wide as the second diseoidal cell at apex. 



Transverse median ner\'nre in hind wings obtusely angularly broken a little 

 above the middle; petiole long, almost straight, not elbowed or 

 much widened at apex (122) Acroricnus Ratzeburg. 



Transverse median nervure in hind wings straight and broken by the sub- 

 discoidal nervure far below themiddle; petiole bent and widened 

 at ai)ical third (123) Stiboacojnis Forster. 



8. Dorsal curinai of first abdominal segment extend from the base to the spiracles, 



but not beyond 9 



Dorsal cariiue of first abdominal segment extend from the base to beyond the 

 spiracles, but rarely to the tip of the segment; if not, then 

 antennae in female compressed or flattened between the middle 

 and the apex 10 



9. Hind tibiae deeply incised at apex, the tarsi attached below the tip. 



Metanotum areolated, tlie areola wider than long; hind tibiiB spinulose. 



(124) GlypJdcnemls Forster. 

 (Type, I'lu/gcidciioii rdijdlnmdus Gravenhorst. ) 

 Hind til)ia5 normal, not deeply incistnl at apex; the tarsi attached normally. 

 Metanotum with the lateral basal and median areas iiot confluent. 



Spiracles small, round (125) Bathymetis Forster. 



Spiracles long oval or ovate (males). 



Last joint of tarsi as long as the third; scutellum spotted with 



yellow (see p. 27) (113) Pezoporus Forster. 



Last joint of tarsi shorter than the third; scutellum black (see 

 p. 27) (112) Stibeutes Forster. 



