PROCEEDINGS OF THE NATIONAL, MUSEUM. 



VOL. 60. 



2. Tergites without oblique furrows Lissonotini. 



Tergites with oblique furrows extending from basal middle to near apical 



margin - Glyptini. 



3. Tarsal claws pectinate; apex of ovipositor spear-head like; (parasites of Lepidop- 



terous larvae), fig. 2 4. 



Fig. 2.— Apices of ovipositoks: a, Toxophokides albomakginata (Cresson); 6, Phytodietus buegessi 

 Ceesson. Hind taesal claw: c, Phytodietus buegessi Ceesson. 



Tarsal claws simple or with a large basal tooth or lobe, fig. 3. 



fiQ. 3.— Hind taesal claws: a, Itoplectis conquis- 

 ITOE (Say); 6, Ichneumon ieeitatoe Fabricius. 



Fig. 4.— Apex of female ab- 

 domen of Toxophoroides 

 albomarginata (cres.son) 

 (A-hypopygidium.) 



4. Tergites 1-4 with oblique and apical transverse furrows and strongly sculptured; 



sou tellum margined laterally; hypopygium heavily chitinized and extending 



to or beyond apex of abdomen, fig. 4 Lycorini. 



Tergites without furrows and polished; scutellum not margined; hypopygium 

 neither especially heavily chitinized nor prominent Phj^odietini. 



5. Ovipositor short, never more than half as long as abdomen, compressed 



(rarely subcircular in cross-section), tapering from base to the acutely 

 pointed apex and usually with a more or less distinct swelling below at 

 or near the middle, straight or curved upward ; clypeus convex, rounded 

 or at most truncate at apex, rarely apically impressed and very rarely 

 confluent with face; last tarsal joint, claws, and onychia usually lai;ge, 

 all claws with basal tooth; face narrow and usually convergent below; 

 mandibles narrow at apex, bidentate or edentate, in the former case 

 usually with upper tooth longer than lower, in the latter case with a 

 broad spoon-like inner flange; areolet only rarely defined (so far as known 

 external parasites on spiders), fig. 5 Polysphinctini. 



Fig. 5.— Apices of ovipositors: o.Polysphincta teiana Cresson; b, Hymenoepimects wiltu (Crep 

 son); Mandible: e, Hymenoepimects wn-To (Cresson). 



