50 Rev. T. A. Marshall's Monograph of 



Wings hyaline ; squamiiloc and radicles testaceous ; stigma and 

 nervures brown, the latter stout and distinct ; radial nervure 

 angulated at the commencement of the 2nd cubital areolet ; 2nd 

 intercubital nervure sometimes faintly indicated ; cubital nervure 

 continued as far as the end of the 1st cubital areolet. Legs rufo- 

 testaceous. Abdomen brownish, with segments 2-5 narrowly pale 

 at the base ; longer than the head and thorax, narrow, lanct-olate, 

 compressed towards the apex ; 1st segment somewhat widened 

 posteriorly, three times as long as its mean width, rufo-fuscous, the 

 tubercles obsolete. ,^ Unknown. Length, 1 1 ; exp. 2i lines. 



Parasite of Pterocomma pilosa, Buckton, puceron of 

 ■Salix viminalis, the comrijon osier, on which it lives in 

 company with Melanoxanthus salicis, L. (see sp. 9) ; Bignell 

 "bred 6 females. On a cursory inspection they resemble 

 urtiex (sp. 8), and rosie (sp. 10). 



17. Aphidius grcmarius, Marshall. 



A. granarius. Marsh., lib. cit., p. 579, ^ $ . 



$ Head and thorax black above ; face, prosternum and meso- 

 sternum testaceous, this last black posteriorly ; abdomen dark 

 Thrown, segments after the 4th yellow above. Clypeus, mandibles 

 and palpi, testaceous. Antennae shorter than the body, 17-jointed, 

 black, with the radicle and upper side of the 2nd joint testaceous. 

 Mesothoracic furrows effaced ; metathorax carinated, areated, the 

 spaces between the raised lines often rufescent. Wings hyaline ; 

 squamulaj and radicles testaceous ; stigma hyaline with a yellowish 

 tinge ; nervures impure testaceous, moderately distinct ; cubital 

 nervure continued to the end of the 1st cubital areolet ; a vestige 

 remains of the second intercubital nervure. Legs fuscotestaceous ; 

 coxae, femora, and tibiae of the 4 posterior more or less infuscated ; 

 2nd joint of trochanters, knees, tips of tibiae, and base of tarsi, 

 testaceous. Abdomen longer than the head and thorax, lanceolate, 

 compressed towards the apex ; 1st segment linear, margined, black, 

 with no visible tubercles ; 2-4 brown, becoming progressively paler 

 posteriorly ; a pale band on the second suture, or on the three first 

 sutures ; the rest of the abdomen pale testaceous above ; beneatli, 

 it is brown to the apex, with only the sutures pale. Valves of the 

 terebra black. ^ Antennae longer than the body, l9-jointed 

 entirely black, except the radicles ; face black ; oral parts, and sides 

 of prothorax testaceous ; the rest of the thorax black ; legs darker 

 than those of the 9 ; abdomen as long as the head and thorax, 



