i 



NO. 1206. ICHNE UMON FLIES— ASHMEA I). 145 



Metathorax not, or incompletely, areolatcd, the areola, if at all dclined, 

 open behind, the lateral areas never distinct; first joint of the llagelluin 

 not longer than the second, equal or slightly shorter; first aVxlominal 

 segment base of the second, as well as sometimes the following segments, 



striate or sculptured (1107) Dorydes Ilaliday. 



Suhmedian cell not longer than the median; abdomen distinctly j)etiolate, the 

 first segment very long and slender; metathorax sculptured l)ut exareo- 

 lated; antenna* long and slender, the first and second joints of the fla- 

 gellum about equal in length (1108) Slenojihtismus Smith. 



Tribe V. HECABOLINI. 



1862. Hecaboloidx, Family 8, Forstek, Verb. d. naturh. Ver. pr. Rheinl., XIX, 

 pp. 227 and 236. 



1887. Hecaholina:, Subfamily, Cresson, Syn. Hym. North America, p. 57. 



1888. HecahoUdx, Tribe IV, Marshall, Species des Hym. des Braconides, I, p. 65. 

 1900. HecaboUni, Tribe I, Ashmead, Smith's Insects of New Jersey, p. 596. 



This tribe i.s easily separated from all the others in this group by 

 the venation of the front wings, which have only fwo cubital cells; 

 otherwise it resembles the Doryetmi, the species falling in it having a 

 cubical-shaped head. 



Only two genera have been recognized, separable as follows,* 



TABLE OF GENERA. 



Marginal cell narrow, cuneiform, prolonged to the tip of the wing; second abdominal 

 segment imth two converging furrows; hind wings in male wilJiout a stigma. 



(1109) Eucoryi^tes Marshall. 



Marginal cell normal, or cultriform; second abdominal segment vrithout converging 

 furrows; bind wings in male with a stigma (1110) Hecabolus Curtis. 



SubfaiTiily XVII. SI>^TKIII<r.gE. 



1862. EuspaiMoidve, Family 2, Forster, Verb. d. naturh. Ver. pr. Rheinl., XIX, 

 pp. 227 and 2.36. 



1887. Spathiinse, Subfamily, Cresson (part) Syn. Hym. North America, p. 57. 



1888. Spathiida;, Tribe III, Marshall (part) Species des Hym. des Braconides, 

 I, p. 65. 



1900. Spathiinse, Subfamily XVII, Ashmead, Smith's Insects of New Jersey, p. 

 597. 



With this subfamily 1 terminate the genuine Braconids, and con- 

 sider it the connecting link between the families BraconidiB and 

 StepJmoiidcB. Its nearest allies are to be found among the Rhogadince^ 

 but from them it is readily separated by the minute, ti]>ial spurs, and 

 in having the subdiscoidal nervure either interstitial or originating 

 above the middle of the discoidal nervure. 



The group is dividable into three tribes, usuall}^ treated as subfami- 

 lies, and recognizable by the characters made use of in the following 

 table: 



Proc. N. M., vol. xxiii 10 



