Genera and Species of Hymenoptera. 539 



shining, and is clearly separated from the face by a suture ; 

 the suture on the mesosternum is wide, deep, and transversely 

 striated ; the prosternum is long and furrowed down the 

 centre. The mandibles are small ; the apical tooth is long, 

 curved, sickle-shaped ; in the middle is a small triangular 

 tooth : above them, on either side of the clypeus, is a large 

 deep depression. 



Belongs by the form of the mouth and mandibles to the 

 Exodontes, and probably to the Dacnusida?, from the fact of 

 there baing apparently only two cubital cellules, counting the 

 small cellule at the base of the radius as the second cubital. 

 The thickened radius also allies it to Dacnusa. The form of 

 the mandibles is different from what we find either in the 

 Dacnusidae or the Alysioidas, they being much more slender 

 and sharper, particularly at the apex. The abdominal petiole 

 is also more slender and distinctly separated. 



Lamadatha testaceipes, sp. n. 



Nigra ; basi antennarum pedibusque testaceis ; alis hyalinis. 

 Long. 2 mm. tf . 



Antennas longer than the body, filiform ; the basal half 

 clear, the apical dark testaceous. Head smooth and shining, 

 sparsely covered with longish hair ; the eyes strongly facetted. 

 Pro- and mesonotum smooth and shining, sparsely covered 

 with longish black hairs : in the middle of the hinder half of 

 the mesonotum is a broad, punctured, longitudinal furrow ; 

 the sides of the raised basal lobe are punctured ; in its centre 

 is a narrow, smooth, longitudinal furrow. Scutellum and 

 postscutellum smooth ; the depression at the base of the 

 former is smooth. The lower part of the propleurse is closely 

 rugosely punctured ; the part of the mesopleurte above the 

 furrow is smooth and shining ; the metapleuras and the meta- 

 notum closely rugosely punctured. Wings hyaline, the basal 

 nervures testaceous; the apical nervures, the stigma, and meta- 

 carpus blackish, the nervures in the hinder wings testaceous. 

 Legs testaceous, longish. Abdomen smooth and shining; the 

 petiole closely rugosely punctured ; behind the middle, on 

 either side, is a small projecting tubercle. 



Found early in June in Cadder Wilderness, near Glasgow, 

 in a fungus much frequented by dipterous larvae. 



Pompilus per turbans , sp. n. 



Niger, pruinosus ; alis fusco-violaceis, cellula cubitali 2 a duplo 



longiore quam 3 a . $ . 

 Long. 13 mm. 



Hub. Barrackpore {Rothney). 



