DOLERUS OBLONGUS. 177 



21. DOLERUS MEGAPTERUS. 

 PI. XIX, fig. 7, Saw. 



Dolerus megapterus, Cam., Tr., Ent. Soc., 1881, 574. 



Black ; head and thorax opaque, densely covered all over with close, 

 longish grey hairs, which give the part a greyish appearance ; closely 

 punctured all over. Antennae not much longer than the head and 

 thorax, short, thick, last joint distinctly thinner than eighth, third 

 much longer than fourth. Cenchri dull grey. Breast and pleurae 

 opaque, covered with a long grey pile. Abdomen smooth and shining, 

 basal segment with a few scattered punctures; the sides and belly 

 covered with a whitish pubescence, which, however, is not so long as 

 that on the thorax. Tibiae and tarsi densely pilose; spurs fuscous, 

 posterior darker. Wings almost hyaline, large; nervure and stigma 

 black ; transverse cubital, radial and recurrent nervures white in the 

 middle. Transverse median nervure received before the middle of the 

 cellule ; accessory nervure in hind wing almost interstitial. 



Length 4f lines. 



Slightly larger than fissus ; antennae shorter, thicker 

 and not so attenuated at the apex; puncturing on 

 thorax not so deep, while the pile is longer and 

 thicker ; head broader ; transverse median nervure is 

 received nearer the base than apex of the cellule, the 

 contrary being the case with fissus, and the cenchri 

 smaller and dull grey. 



Bare. Manchester district. 



22. DOLERUS OBLONGUS. 

 PI. XIX, fig. 6, Saw. 



Dolerus anthracinus, Thorns., Hym. Sc., i, 291, 25; exc. syn. 

 non. Klug. 



Black, shining ; head deeply punctured ; the middle and lateral lobes, 

 except on the extreme outside, and scutellum finely punctured ; 

 abdomen smooth, shining ; basal segment with a few scattered punc- 

 tures ; blotch distinct. Head and thorax covered with a very slight, 

 microscopic, scattered down; abdomen glabrous; cenchri brownish - 

 white. Calcaria long, sharp, more or less white on all the legs. An- 

 tennas shorter than the abdomen, the apical joints a little thinner than 

 the middle ones ; third joint distinctly longer than the fourth. Wings 

 hyaline; stigma brownish on the lower side; transverse radial and 

 second recurrent nervure white ; transverse median nervure received 

 before the middle of cellule ; accessory nervure in hind wing interstitial. 



Length 4 lines. 

 VOL. I. 12 



