British Braconidce. 97 



of ZijgcBna filipcndnlfe, L., which, before attaining its 

 full growth, attached itself by the fore legs to a blade of 

 grass and perished, the skin after death preserving its 

 natural form and colour. The parasite emerged from 

 an irregular jole near the tail, on July 7th, 1810. So 

 far Nees; and his observation is confirmed by the 

 breeding of var. y from the same ZtigcBim at Shedfield, 

 Hants, by Mrs. Jenkyns (see pi. iv., fig. 3a). Eeinhard says 

 of three specimens bred from Zygcsna, that two females 

 were the typical hicolor, and the male was zi/gcence, leaving 

 no doubt as to the correctness of the synonymy. A black 

 var. in my collection is accompanied by the larva-skin 

 of Lioptilus tephrodactijlus, Hiib., from which it was bred 

 by E. C. E. Jordan {cf. E. M. M., vi., 138). Brischke 

 obtained the species from Ino priini, Schiff. ; and Von 

 Heyden, according to Eeinhard, a ? var. from a hairy 

 larva feeding upon Ononis, perhaps Miuiescoptilus plueo- 

 dactylus, Hiib. 



9. Rhogas nigricornis, Wesm. 



Aleiodes nigricornis, Wesm., Nouv. Mem. Ac. Brux., 

 1838, p. 105 ; Eatz., Ichn. d. Forst., iii., 33, a^ ? . 



Rogas nigricornis, Eeinh., Berl. ent. Zeit., 1863, 

 p. 267, ? . 



Black ; palpi, mandibles, legs, and an oblong medial spot on the 

 abdomen, testaceous ; orbits above and behind, meso- and meta- 

 tliorax beneath and at the sides, and sometimes the scutellum, 

 nifescent. Eyes large, vertex narrowed posteriorly. Antennae 

 45 — 50-jointed, wholly black, or fuscous beneath. Mesopleurie 

 granulated, somewhat shining; fovea obsolete. Abdomen elon- 

 gate, of the $ almost obovate ; 1st segment i longer than its 

 apical breadth, three times broader at the apex than at the base ; 

 3d segment broader than the 2d ; segments 1 — 2, and 3 at the base, 

 finely rugulose, more distinctly so at the sides ; the rest punctulate, 

 sUghtly shining. Terebra subexserted. Wings hyahne, stigma 

 testaceous, bordered with fuscous along the radial areolet; 2d 

 cubital areolet about twice as broad as its length, not shorter than 

 the podiscoidal. Length, 3 ; wings, 6 lin. 



This must be carefully distinguished from the dark 

 varieties of circumscrij^tus. It is larger, the antennae are 

 black, and have more joints; the legs are uniform 

 testaceous, with a rufous tinge; the vertex is recti- 

 linearly narrowed behind the eyes ; the abdomen is more 



TRANS. ENT. SOC. LOND. 1885. PART I. (APRIL.) H 



