138 PROCEEDINGS OF THE NATIONAL MUSEUM. voT..xxiri. 



either the first or second; second dorsal abdominal segment with uliliijue 

 lateral depressions which extend from the basal middle. 



(1060) Melanobracon Ashmead, new genus. 

 (Type, Bracon simplex Cresson.) 

 Scape subglobose, obliquely truncate at apex, the pedicel annular, scarcely one- 

 third the length of the first joint of the flagellum, the second and third 

 fiagellar joints equal, hardly so long as wide, shorter than the first; 

 abdomen smooth, polished, banded with white, the second dorsal seg- 

 ment with smooth oblique lateral impressions, the third sometimes with 

 a transverse furrow at base (Australia). 



(1061) Ci:f//i7/raco/i Ashmead, new genus. 

 (Type, Bracon limhatus Brulle.) 



10. Third joint of the flagellum longer than either the first or the second, the first 



shorter than the second; abdomen elongate, the second dorsal segment 



with lateral grooved lines, oblique at base (1062) Coeloidcs Wesmael. 



Third joint of the flagellum not longer than the second, both about equal. 



(1063) Atanycoiiix Forster. 



1 1 . Metathorax smooth, loiUiont a median carina 12 



Metathorax with a distinct median carina 20 



12. Second abscissa of the radius much longer than, and sometimes twice as long 



as, the first (or even longer), always much longer than the first trans- 

 verse cubitus 13 



Second abscissa of the radius vol, or scarcely, longer than the first, usually a 

 little shorter than the first transverse culjitus, or no longer 19 



13. Radius not extending to the tip of the wing 17 



Radius extending to the tip of the wing. 



Legs densely hairy 15 



Legs not densely hairy H 



14. Abdomen abnormal, short rounded, al)ove highly convex, beneath concave, 



with only four or five visible dorsal segments 16 



Abdomen normal, never very short, often elongate, with the usual number of 

 segments. 

 Scape three or more times longer than thick, subcylindrical, with the 

 apical margin l^eneath acutely produced; first joint of the fiagellum 

 nearly twice as long as the second; abdomen elongate, much longer 

 than the head and thorax united, narrowed toward the base, smooth, 

 but the first and second dorsal segments with deep lateral grooved lines, 

 furrows, or depressions, the third with two shallow oblique impressions; 

 metathoracic spiracles large, linear, placed behind the middle; all tarsi 

 longer than their tibite, and the joints armed with stiff bristles or spines 



at apex (1064) Compsobracon Ashmead, new genus. 



(Type, Exothecus magnificus Ashmead, manuscript. ) 

 Scape subglobose, or not twice as long as thick, shorter than the first joint 

 of the flagellum, or no longer, and rarely more than two and one-half 

 times as long as thick; first joint of the flagellum slightly the longest 

 joint, or never shorter than the second or the third; pedicel about twice 

 as long as thick; abdomen oblong oval, not longer than the head and 

 thorax united, smooth, except sometimes the first and second at base 

 laterally, which are usually striate, the second dorsal segment without 

 lateral grooved furrows, the third simple without impressions; meta- 

 thoracic spiracles small, rounded, placed at or a little before the middle; 

 tarsi unarmed, the last joint aljout the length of the second. 



(1065) Macrodyctium Ashmead, new genus. 

 (Type, Bracon euwic Ashmead.) 



