14 GENERA OF HYMENOPTERA. 



Table of Genera. 

 Subfamily CiMBiciNiE. 



Anterior winps with two marginal and three subniarginal cells, the first subniar- 



ginal receiving both recurrent nerviires; antenna? c'avate 2. 



Anterior wings with one marginal cell and three suhmarginal cells, the first and 

 second submarginals each receiving a recurrent nervure; antennse 



6-jointed, not clavate Acordfilecera Say. 



2. — Lanceolate cell with straight cross-nervure. 



Antennse 7-jointed Cimbex Oliv. 



Antennai 8-jointed Trichiot«Oina Leach. 



Lanceolate cell contracted in the middle. 



Antennse 6-jointed Zarea Leach. 



Antti>na; ~-jointed Abia Leach. 



Subfamily Hylotomin^. 



Anterior wings with one marginal, not appendiculate, cell 2. 



Anterior wings with one marginal, appendiculate, cell and four subnuirginai 



cells 3. 



2. — Four submargiual cells, the second and thinl each receiving a recurrent 

 nervur*-,. 



Antennfe furcate in % Sehizocerns Latr. 



Antennie simple in % .4toiiiacera Say. 



Three suhmarginal cells, the first receiving both recurrent nervures. 



Themos Norton. 

 3. — Second and third suhmarginal cells each receiving a recurrent nervure. 



Hylotoma Latr. 

 Second suhmarginal cell receiving both recurrent nervures... Ptenus Nort. 



Subfamily Tenthredinin.<e. 



Anterior wings with one marginal cell 2. 



Anterior wings with two marginal cells 5. 



2.— Three suhmarginal cells 3. 



Four suhmarginal cells 4. 



3. — First and second suhmarginal cells each receiving a recurrent nervure. 



Antennte % with ba-sjil joints of flagellum i)roduced or branched beneath ; 



inner 1oIh» of maxillie sharp, not membranous Clatiinst Illig. 



Antennse % with third joint simple, without process beneath ; inner lolie 



of maxillae blunt Priophoru)^ Dahlb. 



First suhmarginal cell receiving both recurrent nervures. 



Pristiphora Latr. 

 Second suhmarginal cell receiving both recurrent nervures.. Euiira Newni. 

 4. — Second suhmarginal cell receiving both recurrent niu-vures. 



Posterior tibire and basal joint of tarsi much flattened and dilated. 



Crfesus Leach. 

 Posterior tihise and base of tarsi not unusually dilated. 

 Abdomen short ; second suhmarginal cell much longer than the third. 



Nematns Jur. 

 Abdomen long; second and third suhmarginal cells sube(|uul. 



Hypola'pus Kirby 



