Manchester Memoirs, Vol. xliii. ( 1 899), No. 3. 21 



notum closely punctured, thickly covered with short, 

 black hair ; the middle lobe widely depressed at the base, 

 finely furrowed down the middle. Scutellum pyramidal, 

 but not sharply so, the top being broadly and equally 

 rounded ; it is thickly covered with short, black hair. 

 The legs are coloured like the thorax ; the anterior are 

 paler at the base ; the hinder tibiae and tarsi are black, 

 except the apical joint of the tarsi. Wings smoky- 

 violaceous, lighter, of a more yellowish tinge, before the 

 stigma ; the stigma and nervures black, the costa ferru- 

 ginous. The apical half of the abdomen black ; the 

 apical three segments entirely so. 



The $ is similar to the ? ; the middle lobe of the 

 mesonotum is black at the base. 



The following species may constitute the type of a 

 new genus when the Indian sawflies have been properly 

 studied. 



Head large, wider than the mesonotum, behind dis- 

 tinctly and sharply margined or keeled. Eyes parallel, 

 not converging below ; separated by a clear space from 

 the base of the mandibles, and distinctly margined. 

 Antennae longish, thickened beyond the middle ; the 

 apex attenuated ; the third joint not much longer than 

 the fourth. Mandibles with only one long apical tooth. 

 Wings, body and legs as in Tenthredo. The accessory 

 nervure in hind wings interstitial. 



It will be seen that it differs from Tenthredo, as 

 defined by Konow, in the eyes not converging beneath, 

 and in not reaching to the base of the mandibles, in which 

 respects it agrees with Rhogogastera, but it differs from 

 that genus in having the antennae much longer and in 

 the humeral cellule in the hind wings not being appen- 

 diculate. 



B 



