246 Journal New York Ento.mological Society. [Voi. x. 



First abscissa of the radius straight from the margin, shorter than the marginal 



vein ; funicular joints only slightly shortening Zelotypa Forster 



(type unknown). 

 First abscissa of the radius oblique, usually longer than the marginal vein ; 

 funicular joints strongly shortening, the apical joints wider than long. 



Pantoclis Forster ( type Belyta brevis Nees). 



13. Stigmal vein very short, with an uncus, marginal vein as long as the basal 



nervure 14 



Stigmal and postmarginal veins much shortened but distinct. 



Stigmal vein originating at almost a right angle ; antenna; filiform, funicle 

 joints 2-12 transverse moniliform, the pedicel obconical. 



Zygota Forster (type Belyta aljdoininalis Nees). 

 Stigmal vein originating at a very oblique angle ; antennae clavate, monili- 

 form, the first funicle joint only a little longer than thick and smaller 

 than the pedicel Aclista AJ/'.y/e'r (type unknown). 



14. Mandibles conical, not rostriform ; paljji 4-jointed ; scape at tip produced into 



a little spine Synacra Forster (type Diapria tjrm /lialis'^^.K?,). 



15. Mesonotum with distinct parapsidal furrows; marginal cell long, open ; anten- 



nae clavate, moniliform, the first funicle joint slightly longer than the pedicel. 



Psilomma Forster (type unknown). 



Mesonotum without parapsidal furrows ; marginal cell not long and closed ; 



antennce subfiliform Ismarus IlaliJay (type /. dorsii^er Curtis). 



16. Wingless; ocelli wanting Anommatium /'(V^A-r (type unknown ). 



Winged ; ocelli present. 



Marginal cell distinct, closed ; antennce filiform or subclavate. 



Anectata Forster (type unknown). 



Marginal cell wanting or only slightly developed ; antennae subclavate, 

 moniliform, pubescent, the first joint of funicle smaller than the pedi- 

 cel Pantolyta T^fV/'j/,?;' (type Belyta heterocera Hal). 



17. Parapsidal furrows obsolete ; angles of metathora.K spined. 



Malvina Cameron (type I\[. punctata Cam). 



18. Petiole of abdomen nearly twice as long as the metathorax 19 



Petiole of abdomen not, or scarcely, longer than the metathorax 21 



19. Marginal vein not twice as long as the marginal cell 20 



Marginal vein twice as long as the marginal cell Macrohynnis torster. 



20. Second abdominal segment compressed laterally ; petiole above smooth. 



Antennas filiform, the scape as long as the first funicular joint, the latter 



strongly emarginate at base Leptorhaptus F'oister. 



Antenna; filiform, pubescent, the scape shorter than the first tunicular joint, 



the latter not so strongly emarginate at base Miota Forster. 



Second abdominal segment not compressed laterally, the abdomen becoming 

 more flattened behind this segment, the petiole above more or less furrowed ; 

 scape longer than the first funicle joint QvnQtuS Jnrhie. 



21. Middle carina of metathorax not divided 22 



Middle carina of metathorax divided or absent. 



