MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 2()3 



steiuinini, but it is believed thv table below will be t'omid all that is 

 necessary to (listiugnish tbem. If, however, tin; student should be at 

 fault the full generic description may be consulted. 



TABLE OF GENERA. 



FEMAI.ES. 



Scntellnm not lengthened, semicircnlar, either flat or convex and unarmed 5 



Sontelluni lengthened, never semicircnlar, or when .shortened it is compressed 



at side.s and furnished with an awl-shaped thorn or tn)»ercle at tip. 2 



2. Scutellum with a strong awl-s!iai»ed thorn at tip 3 



Scutellum with a short thorn or tubercle at tip 4 



Scutellum lengthened, triangular, often produc^ed into a long, acute spine. 



Thorax strongly compressed from the sides. 



Head large, rounded, or (|uadrate Piestopleuka Forst. 



Thorax not strongly compressed from the sides. 



Mesonotal furrows deep, parallel posteriorly Xestonotus Fiirst. 



Mesonotal furrows feebly impressed or wanting A.mblyaspis Fiirsi. 



3. Lateral ocelli nearer the margin of eye than to the apical ocellus; antennal club 



4- jointed Leptacis Fiirst. 



Lateral ocelli not nearer the maigin of eye than to the apical ocellus; antennal 

 club 3-)ointed Isorho-Mbis Fiirst. 



4. Abdomen very much lengthened; anteuual club .^-jointed. Lateral ocelli as near 



to the front ocellus as to the margin of the eye ..Poi.ymecus Forst. 

 Abdomen not especially lengthened; antennal club 4-jointed. 

 Second ventral segment strongly compressed, sack-like; lateral ocelli their 



width from the eye margin Sactocjastek Fiirst. 



Second ventral segment normal; lateral ocelli close to the eye margin. 



Synopeas Fiirst. 



5. Scutellum convex 6 



Scutellum cupuliform as in the Cynipid genus Eucoila. 



CtELOPELTA Ashm., gen. nov. 

 Scutellum not cupuliform, flattened. 

 Mesonotal furrows wanting; antennsB 10-jointed, the club 4-jointed. 



Anopedias Fiirst. 

 Mesonotal furrows usually distinct; antenna) 8-joiuted, club not jointed. 



Amitu.i Hald. 



6. Scutellum with a tuft of hair at tip Triciiacis Fiirst. 



Scutellum without a tuft of hair at tip. 



Abdomen very much lengthened. (Polymecus.) 

 Abdomen not much lengthened. 



Margin of abdomen very broadly dcflexed Hypocampsis Fiirst. 



Margin of abdomeil normal. 



Thorax short; the scutellum pillow-shaped, "separated from the mesonotum 

 by a deep furrow; mesonotal furrows rarely distinct or complete. 



No keel between the antennte PoLYGNOTrs Fiirst. 



A sharp distinct keel between tiie antenna'. 



Eritrissomerps Ashm., gen. nov. 

 _:^ Thorax more elongate; scutellum not separated from the mescmotum by a 

 deep furrow. Mesonotal furrows distinct, complete. 

 Lateral ocelli nearer the margin of the eye than to the apical ocellus ; 



head transverse Platygaster Latreille 



Lateral ocelli nearer to the apical ocellus than to the margin of the eye; 



head cubital Isocybus Furst. 



