1882.1 271 



yellow transverse patch on the upper-side at the base, posterior margin of the last 

 four segments very narrowly brown, clown the centre of each a short narrow streak, 

 not reaching the anterior margin, posterior margin of the last segment broadly white : 

 genital segment black, shining, viewed from the side the posterior margin is pro- 

 duced into an angular form, and having a short, curved, acute tooth at the lower 

 extremity, viewed from behind almost circular, margins of the upper half folding 

 down inwardly and forming two triangular flaps, leaving a small space between their 

 edges down the centre, processes black, forming a wide V-shaped character, apex of 

 the arms white, produced into a point. Length 1 lin. (Paris), nearly. 



The shape of the genital segment is alone sufficient to lead to the 

 identity of this species, viz. : the flat isosceles-angular form of the 

 posterior margin of the segment as seen from the side, and the two 

 triangular flap-like pieces as seen from behind. 



I have only seen a single $ example taken by Mr. Gr. Norman, 

 at Pitlochry. 



Lee, S.E. : 3rd April, 1882. 



NOTES ON TEXTHREDINIDA1. 



BY P. CAMERON. 



(continued from page 195 J 



Blennocampa (Monophadntjs) sulcata, sp. n. 



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

 legs a fuscous tinge ; 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 ; 3rd 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 the base ; transverse radial nervure received in apical third of 

 3rd cubital cellule ; transverse median a little before the middle of median cellule ; 

 1st recurrent a little in front of middle of the 2nd cubital cellule ; 2nd scarcely so 

 near the middle of the 3rd, and not received in such an acute angle as the 1st ; 

 3rd cubital cellule short and wide, compared with the length, which is a little shorter 

 than the 2nd, on upper side, but longer on lower ; there is a "bulla " on 1st trans- 

 verse cubital nervure. Claws simple. Abdomen about one-fourth longer than the 

 head and thorax ; sheath of saw projecting, its upper side produced into a projecting 

 rounded point, and bearing a few hairs. 



The $ is similar in coloration, and has the antennae a very little longer, and the 

 wings if anything clearer. Length, 6 — 6£ mm. 



This distinct species is very closely related to B. exarmata, Thorns. 

 (Hym. Scand., i, 207), olim monticola, id. Opus. Ent., 279, 3, non Hartig., 

 but that has the antennae filiform, and the 3rd cubital cellule elongated, 

 and no mention is made of any peculiarity in the shape of the sheath. 

 Prom B. micans, Klug, it may be known by the eyes not reaching 

 close to the base of the mandibles, by the indistinct frontal sutures 

 and area, by the deep suture behind the eyes, while the head projects 



