GENUS PAMPHILIUS. 91 



The first radial cellule is much shorter than the 

 second owing to the transverse radial nervure origina- 

 ting before the end of the stigma, and being quite 

 straight or directed towards the base of the wings. 

 It is either received before the second transverse 

 cubital nervure and in the second cubital cellule, or is 

 united to the second transverse cubital nervure. The 

 cubital nervure does not extend to the apex of the 

 wing as in Tenthredo, &c. ; it curves up shortly after 

 receiving the third transverse cubital nervure, and joins 

 the costa nearly on a level with the stigma, uniting 

 with a nervure which surrounds the upper part of the 

 second radial cellule. There is a cross nervure in the 

 costal cellule. The first transverse cubital nervure is 

 received not far from the base of the stigma. The 

 basal is united to the costal at a slight distance from 

 its origin (in the first cubital cellule) in some species 

 (inanitus), or may be as in erythrocephalus interstitial. 

 Characteristic in some species is the interrupted ner- 

 vure, which issues from the median nervure a little past 

 its middle (=trans verse brachial nervure of Thom- 

 son). The transverse median nervure is received not 

 far past the middle. Lanceolate cellule wide ; its cross- 

 nervure oblique ; the anal nervure dilated upwards in 

 the middle. There is a deep depression at base of 

 scutellum separating it from the rather short middle 

 lobe of the mesonotum. Cenchri large. Blotch in 

 abdomen distinct. Apex of abdomen rounded ; abdo- 

 minal segments acute at the sides, the edge of each 

 projecting in front of the base of the succeeding. 



Legs stout, of medium length ; sometimes the ante- 

 rior tibise are spined as well as the posterior. Spurs 

 short, stout. The fifth joint of the posterior tarsi is 

 nearly as long as basal. 



Ovipositor short, slender; the support broad and 

 sharply angled at base, the apex acute ; saw also 

 somewhat sharp at the point, and generally without 

 teeth. 



The genus contains more than fifty European 



