340 BULI-KTIN 4r., tlNITED STATKS NATIONAL MUSKUM. 



The following tublu iiu'ludcH iili the ^jenera at present known to me: 



TAKLE OP GKNKBA. 

 rp.MALKH. 



Antenna) 14-jointcd....... .......>>. .....7 



Anteunii> 15-Jointe<l. 



Alxlouien with 7 or 8 <lnrsal R»'i;nii»nts...... 3 



Ahdoniou with '.i or 4 <lort«:il Hcgraents. 



Marginal vein as long as, or scarcely longer than, the marginal cell 2 



Marginal vuin more than twice as long an the marginal cell. 



Macrohynnis FofBter. 

 2. First fiinlclar joint nearly as long as all the rest together, the intermediate joints 



transverse-monilifotm ...... ». ..Dipiioka Fomter. 



First fnniclar joint not nniiMially lengthened. 

 Abdomen with 3, seldom with 4 dorsal segments, the second not greatly length- 

 ened, the third long and strongly compressed laterally ; marginal vein 

 not shorter than the marginal cell; antennte filiform, puhescent, the 



fnniclar joints all long LEPTORHAprrs Fiirster. 



Abdomen with 3 segments, the second very mnch lengthened, almost reaching 

 to tip of abdomen, the third issuing from it like a short stylus; 

 marginal vein usually distinctly shorter than the marginal cell; 

 antenuie filiform, pubescent, the 5 or 6 terminal joints oval, the 



•tthers long Miota Forster. 



8. Abdomen with 7 dorsal segments; autennie clavate-moniliform, the first fuuiclar 

 joint slightly longer than the pedicel, all others to the last monlli- 

 form, the last enlarged, oval; first abscissa of radius straight, or at 



least not very oblique Acrofiesta Fiiiuter. 



Abdomen with 8 dorsal segments. 



Eyes bare 6 



Eyes hairy. 



Middle carina of metathorax not divided 4 



Middle carina of metathorax divided, or wanting Belyta Jurine. 



4. Postscutellum with a strong thorn or spine Oxylabis Forst. 



Postscutellum without a thorn or spine. 



Third dorsal segment of abdomen not, or very little, longer than the fourth... 5 

 Third dorsal segment of abdomen much longer than the fourth. 

 Mandibles short, small; marginal vein as long as marginal cell; antenna 

 filiform, pubescent, the last flagellar joint more than twice as 



long as thick Cinetus Jurine. 



Mandibles long, falcate ; marginal vein shorter than the marginal cell ; last 

 r ■ funiclar joint not more than twice as long as thick. 



Xenotoma Forster. 



5. Marginal cell closed. 



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

 vein : funiclar joints only slightly shortened toward the tips of 

 antenna) Zelotypa Forster. 



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

 joints strongly shortened toward the tips of antennae, much wider 



than long Pantoclis Forster. 



Marginal cell open. 



Stigmal and postmarginal veins much shortened, tbestigmal given off at almost 

 aright angle Zyoota Forster. 



