NO. 1206. ICHNEUMON FLIES— ASHMEAD. 205 



depression on (>ach side of the antennae, T)etween them and tlie 

 eyes, which extends npward and i)08teriorly on the vertex. 



Family XCIII. Tentmueijinid.k (part) 



(^Subfamily STKON(iYLOCiASTKKIN^K). 



7. Front Avings with two cubital cells 8 



Front wings with one cubital cell; second submarginal cell receiving two recur- 

 rent nervures; lanceolate cell contracted near the middle and closed 

 at base, or petiolate; antenmieO-jointed... Family XCI. NEMATin.iE. 



8. Abdomen acutely margined at sides; antenna? clavate, 5 to 8 jointed 9 



Abdomen not margined at sides; antenme not clavate, 8 to 9 jointed; front wings 



with three or four cubital cells. 



Front wings with four cubital cells, the second usually receiving both recur- 

 rent nervures or the second recurrent is interstitial with the second 

 transverse cubitus, very rarely joining the base of the third sub- 

 marginal cell; if with only three cubital cells the first transverse 

 cubitus is wanting; abdomen short, oviform. 



Family XCIl. Dineurid^. 



Front wings with four cubital cells, the second and third each receiving a 

 recurrent uervure; if wdth three suljmarginal cells, either the first 

 or the second transverse cubitus is wanting; abdomen elongate, 

 subcylindrical Family XCIII. TEXTnREDixiD.E. 



9. Dorsal plates of first abdominal segment usually deeply emarginate medially, 



leaving a membrane exposed Family XCIV. Cimbicid.e. 



