236 BLENNOOAMPA SULCATA. 



4, BLENNOCAMPA SULCATA. 



Blennocampa sulcata, Cam., E. M. M., xviii, 271 (1882). 



Black ; covered with a silky -greyish or blackish pubescence, which 

 gives the legs a fuscous tint ; apical fourth of anterior femora and 

 tibiae in front, and the four posterior knees dull testaceous-white. 

 Antennae thickish, not much longer than the head and thorax ; third 

 joint about one fourth longer than the succeeding. Head with a deep, 

 longish depression behind the eyes, and slightly projecting behind them ; 

 frontal area and sutures indistinct ; clypeus very slightly incised. 

 Wings smoky, somewhat darker at base; transverse radial nervure 

 received at apical third of third cubital cellule ; transverse median a 

 little in front of middle of cellule ; first recurrent a little in front of 

 middle of second cubital cellule ; second scarcely so near the middle of 

 the third cubital cellule and not received at such an acute angle as the 

 first is ; third cubital cellule short and wide compared to the length, which 

 is a little shorter than second on upper side, but longer on lower ; a 

 bulla in first transverse cubital nervure. Claws simple. Abdomen 

 about one-fourth longer than head and thorax ; sheath of saw projecting, 

 its upper side produced into a projecting rounded point, and marked 

 with a few longish hairs. 



The <J is similar in coloration, and has the antennae a very little 

 longer, and the wings if anything clearer. 



Length 2f lines. 



This distinct species is very closely related to B. 

 exarmata, Thorns. (Hymen. Sc., i, 207), olim monti- 

 cola, Opus., 279, 3, non Hart., but that has the 

 antennae filiform, and the third cubital cellule elongated. 

 From B. micans it may be known by the eyes not 

 reaching so close to the mandibles, by the indistinct 

 frontal sutures and area, by the deep suture behind the 

 eyes, while the head projects more behind, by the 

 shorter third cubital cellule, the transverse radial 

 nervure is received farther from the third transverse 

 cubital, and consequently the second radial cellule is 

 longer ; and lastly, in micans the transverse median 

 nervure is received in the middle of cellule, while in 

 sulcata it is received a piece in front of middle. 

 Sericans, again, is larger, has the abdomen longer 

 compared to the head and thorax, the middle tibise 

 and tarsi are distinctly obscure white in front, the 

 antennal fovea longer, there is no suture behind the 

 eye, while the sheath is not prolonged into a projecting 

 point at the upper partj and the saw is longer with 



