112 PROCEEDINGS OF THE NA TIONA L MUSEUM. vol. xxin. 



7. Front wings witli Iwo cubital cells Subfamily VIII. sigalphinvE. 



Front wings with three cubital cells Sul)i'ainily IX. CHELoxiNiE. 



S. Hind wings most frequently with two marginal cells and often with a discoidal 

 cell; if with only one marginal cell, the marginal cell in the front wings 

 is wanting or incomplete, or at most feebly indicated; mesonotum with or 

 without furrows; subchscoidal nervure in hind wings never present, the 



median cell usually more or less contracted at the middle 10 



Hind wings with onlj^ one marginal cell, the radius most frequently wanting; 

 mesonotal furrows usually complete; marginal cell in front wings always 

 present. 

 Hind wings always without a subdiscoidal nervure and without a discoidal 



cell 11 



- Hind wings iinth a more or less distinct subdiscoidal nervure and also fre- 

 quently with a discoidal cell 9 



9. Thorax with distinct and complete parapsidal furrows which converge and meet 

 ].)efore the base of the scutellum and then extend as a single furrow to 

 the scutellar fovea; marginal cell usually very narrow, pointed. 



Subfamily X. agathidin.e. 



10. Mesonotum villi distinct and complete parapsidal furrows which converge and 



meet a little before attaining the base of the scutellum, but which do not 

 extend to the scutellar fovea; front wings with three cubital cells, the 

 second very large, as long or longer than the first; marginal cell com- 

 plete, the second abscissa of the radius reclivate and extending to the 



apex of the wing Subfamily XI. cardiochilix.e. 



Mesonotum without parapsidal furrows; front wings with tirn or three submar- 

 ginal cells, rarely with only one, the second always small, triangular or 

 subquadrate, often open behind; marginal cell most frequently wanting 

 or incomplete, very rarely complete ..Subfamily XII. microgasterin>e. 



11. Front wings with the anal cell divided by a transverse nervure or a stump of a 



vein, the marginal cell very short; hind wings without a recurrent nerv- 

 ure, the radius usually present Subfamily XIII. ichneutin^. 



Front wings with the anal cell not divided by a transeverse nervure, the mar- 

 ginal cell long, never very short; hind wings with the recin-rent nervure 

 sometimes present, the radius most frequently wanting. 



Subfamily XIV. opiin;e. 



12. Head posteriorly with the occiput, temples and cheeks immargined; hind wings 



with the submedian cell very short, the recurrent nervure always 



absent 13 



Head posteriorly with the occiput, temples and cheeks margined (very rarely 

 with the cheeks immargined); hind wings with the submedian cell not 

 very short, the recurrent nervure most frequently present 14 



13. Front wings with three cul^ital cells, the subdiscoidal nervure originating below 



the middle of the discoidal nervure Subfamily XV. KnACOxix.E. 



14. Front wings with the subdiscoidal nervure never interstitial and always origi- 



nating beloir the middle of the discoidal nervure; mesonotal furrows 

 usually present and extending to the base of the scutellum, or very near 

 it; hind tibial spurs not very short; apterous forms occasionally. 



Subfamily XVI. rhogadinjE. 



Front Avings with the subdiscoidal nervure ■interstitial or originating above the 



middle of the discoidal nervure; mesonotal furrows usually converging 



and uniting before attaining the scutellum, frequently arcuate or wanting; 



all tibial si)urs minute; apterous oi" subapterous forms rare. 



Subfamilv XVII. si'atmiin.e. 



