14 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



let trapezoidal, rarely quadrate, triangular, or pentagonal (rarely 

 wanting) 8 



Antennpe in both sexes filiform, not perceptibly dilated at the middle. 



Abdomen with more than tliree visible dorsal segments, and aciculate or 

 striate 7 



Abdomen with only three visible dorsal segments, closely and strongly punc- 

 tate, the third at apex ending in a strong tooth on each side; 



scutellnm at apex tridentate (11) Rothneyia Cameron. 



(Type, Rothneyia rornughtonii Cameron.) 



7. Legs long and slender, the hind femora extending to or beyond the tip of the 



abdomen; last ventral segment entire; shape of body and color 

 of wings similar to Macrojoppa species. 



(12) Ischnopus Kreichbaumer. 



(Type, Ischnopus longicejys Kreichbaumer. ) 



Legs shorter, at the most the hind femora extending only to the apex of the 



fourth dorsal segment. 



Beutellum flat; wings wholly violaceous black or the anterior are marked 



with yellow (13) Pedinopelte Kreichbaumer. 



(Type, Joppa Ch-avenhorstu Guerin. ) 

 Scutellnm subquadrate, truncate at aj^ex, subconvex above and margined 

 laterally; metathorax short, imperfectly areolated, the spiracles 

 elongate linear; areolet in front wings triangular. 



(14) Oifta Tosquinet. 

 (Type, Ohba ccelatus Tosquinet.) 

 Scutellum more or less pyramidal or conical, immargined; areolet in front 

 wings subpentagonal or subrhomboidal. 



(15) DifwtoniHS For.ster = Psilomastix Tischbein. 

 (Type, Ichneumon Japidator Fabricius. ) 



8. Scutellum elevated, convex, conical or saddle-shaped; posterior face of meta- 



thorax with three parallel areas, rarely entirely wanting or 

 indistinctly defined 9 



9. Metathorax normal, the upper hind angles not produced into teeth or spines. .10 

 jNIetathorax with the upper hind angles produced into teeth or spines, or with a 



very sharp ledge 14 



10. Areolet small or only moderately large, trapezoidal, triangular, or ])entagonal ..11 

 Areolet large, in outline quadrate; abdomen with normal number of segments. 



(16) Tetragonochara Kriechbaumer. 

 (Type, Joppa pohjchroa Brulle. ) 

 Areolet wanting; abdomen with only three visible dorsal segments. 



(17) C7irei(sa Cameron. 

 (Type, Chreusa fulripes Cameron.) 



11 . Abdomen luith a ventral slit at apex 12 



Abdomen luithout a ventral slit at apex. 



Scutellum and metanotum at base elevated, the postscutellum ]:)etween also 

 sometimes with a small elevation, the metanotum very short, 

 obliquely truncate from near base; areolet in front wings trajjc- 

 zoidal or rhomboidal, more rarely pentagonal. 

 Labrum hidden, areola of metanotum obsolete or very minute, some- 

 times represented by a tubercle; areolet in front wings not pen- 

 tagonal; scutellum subconical, not margined laterally. 



(18) Trogus Gravenhorst^ Trkyphus Kriechbaumer. 



Labrum not entirely hidden, rounded anteriorly; areola of metanotum 



distinct, usually horse-hoof shaped; areolet in front wings 



usually pentagonal (19) Axdomalus Wesmael. 



(Type, Trogus albogidtatus GraxQwhoYiiX.) 



