British Brdconidce. 69 



Two species are referred to this singular genus ; their 

 characters are so discrepant that it is very easy to dis- 

 tinguish them : — 



Antennae $ 5 with two geniculations ; terebra 



subexserted . , 1. fulviceps, Westw. 



Antenna 1 $ filiform ; of the J , with one genicu- 



lation ; 1st joint elongate in both ; terebra 



nearly as long as \ the abdomen . . . . 2. macroscapa, Ruthe. 



1. Streblocera fulviceps, Westw. (PI. V., fig. 2). 



Streblocera fulviceps, Westw., Phil. Mag., I.e.; Int., 

 ii., 138, f. lxxv., 19 (antenna), 20 (wing), and 

 p. 154; Tijdschr. v. Ent., 1881—82, p. 45, pi. 

 viii., f. 6, ? , f . 7 (antenna ? ), f. 8 (antenna $ ) ; 

 S. v. Voll., Schets. Bracon., tab. iv. 



5 . Black or piceous ; head and 3 basal joints of the antennas 

 ferruginous, the following joints fuscous ; eyes and stemmaticnm 

 blackish ; legs testaceous, tibite at the tips, and tarsi, hardly 

 infuscated. Wings hyaline, nervures, stigma, and squamuhe 

 testaceous ; prasbrachial nervure distinct ; radial areolet semi- 

 cordate, ending nearer to the tip of the wing than to the stigma ; 

 radius regularly curved. Head large, wider thau the thorax ; 

 vertex elevated, transverse; occiput broadly excavated. Antennas 

 10-jointed; 1st joint longer than the head, incrassated, armed with 

 a curved tooth beneath, beyond which it is sinuated ; 2d short, 

 obliquely articulated with the preceding, forming an acute angle ; 

 3d shorter than the 1st, incrassated and curved ; 4th obliquely 

 inserted before the apex of the 3d, forming another angle ; joints 

 4 — 16 (the flagellum) moniliform. Metathorax short, truncated 

 posteriorly, slightly excavated, uneven, scarcely shining. First 

 abdominal segment twice as long as its apical breadth, the 

 tubercles situated beyond the middle ; segment 2 twice as long as 

 3 ; 4 and following very short ; abdomen (exclusive of the 1st 

 segment), viewed from above, ovate, much shorter than the thorax. 

 Terebra hardly exserted, the valves stout, black. 



$ . Antennas 19-jointed, 1st and 3d joints elongate, incrassated, 

 2d and 4th obliquely inserted, forming two geniculations ; joints 

 4 — 19 filiform. I have not seen the $ , and this is borrowed from 

 the figure iu the Tijdschrift; in the description it appears that by 

 some accident the signs of the sexes (£ ?) have been reversed. 

 Length, i — 1 ; wings, 1^ — 2 lin. 



Prof. Westwood discovered the ? in August, 1833, in 

 Coonibe Wood. Desvignes possessed a specimen which 



