20 GENERA OF HYMENOPTERA. • 



28. — Antennup setaceous, longer than alxlomen ; pleurae l)n)adly marked with 



wliite Pachyprotasis Hartig. 



Antennic short, thick ; pleura; stildoni maculate Macrophya Dahlb. 



29.— AntenntE shorter than the head and thorax, thickened at the ai>ex, never 



filiform or setaceous IJO. 



Antennje longer than the head and thorax, filiform or setaceous, seldom 



fusiform ;}1 



30. — Eyes converging, reaching to the base of the mandibles ; labrum rounded 



at apex Allantus Piiir^. 



Eyes not converging, not reaching to the base of the mandibles; labrum 



incised at apex Sciopteryx .Stt'i)h. 



31.— Blotch absent; third and fourth joints of antennre subequal ; stigma white 

 and fuscous or entirely white; seutellum and postscutcllum white. 



Tenthredopsis Costa. 



Blotch distinct; third joint of antennte considerably longer than fourth; 



stigma black or green; postscutellum not white ..Tenthredo Leach. 



32. — Antennae with not more than eighteen joints, dentate ; posterior tibia; with 



three spines «Tarpa Fabr. 



Antennse with more than eighteen joints, filiform ; posterior tiliiie with 

 three spines Lyda Fabr. 



Tlie tribe (subfamily) Tenthredina is then divided into the fol- 

 lowing subtribes : 



Antennte 9-jointed ; basal nervure received at a distance from the cubital ; poste- 

 rior wings with two middle cells. 

 Anterior wings with two radial and four cubital cells, the second and third 

 receiving each a recurrent nervure ; lanceolate cell subcontracted, or 

 with a jierpendicular and more rarely with an oblique cross-nervure. 



Tenthredinides. 



Anterior wings with two radial and three cubital cells, the second cubital the 



largest and receiving two recurrent nervures; lanceolate cell with an 



oblique cros.s-nervure Dolerides. 



Antennse 7-15-joiuted; anterior wings with two radial and three or four cubital 

 cells ; lanceolate cell petiolate or open, with an oblique cross-nervure 

 or contracted ; basal nervure joined to the cubital ; jKKsterior wings 

 rarely w^ith two middle cells, often with one or none Selandriades. 



The Tenthredinides contains the genera Tenthredo, Tenthredopsis, 

 Synceretna, AlUmtm, Scwptenjx, Pachyprotam and Macrophjn. 



The Dolerides contains only the genus Dolerm. 



The 8elandriade,s include Stronc/ylogaster, Selandria, Taxonus, Poeci- 

 lodoma, Eriwampa, Blennocampa {= Mouophadiius and Phymatocera), 

 Hoplocmnpa, Harpiphorns, Emphytm, Phyllotoma, Fenella, Fenusa, 

 Heptamelus (= Genomnira) and Athalia in the order given. 



The second volume is devoted entirely to the Nematina, and con- 

 tains the genera Heniichroa, Dineura (^ Memneura), Cladim (= 

 Priophorus), Camponiscus, CroesKs, Netnntm (= Me,*sa), and Euura 

 (= Cryptocanipm). 



