160 THE ENTOMOLOGIST. 



(3). 8. Frons prominent, convex or carinate above anfcennal 

 insertion. 

 (10). 9. Wings strongly infumate and nigrescent throughout. 



4. fumipennis, Kief. 

 (9). 10. Wings hyaline or but slightly infumate. 



(12). 11. Terebra quite straight and not discally curved. 



5. niger, Panz. 

 (11). 12. Terebra always distinctly arcuate discally. 



(14). 13. Flagellar joints cylindrical and not crenuiate. 



6. ater, Nees. 

 (13). 14. Flagellar joints curved, rendering nagellum crenuiate. 



7. ligatus, Nees. 

 (2). 15. Second, large abdominal segment not basally striate. 



8. Iceviventris, Kief. 

 (1). 16. Radial cell very nearly as long as the small stigma. 



9. Wasmanni, Kief. 



1. EXALLONYX LONGICORNIS, Nees. 



Codrus longicornis, Nees, I.e., p. 358, 2 . Proctotrupes longi- 

 covnis, Hal., I.e., p. 9, $ ? . Exallonyx longicornis, Andre, I.e., 

 p. 335. 



France, Germany and Italy. Frequent in England (Walker), 

 northern Ireland and near Edinburgh (Haliday). The commonest 

 species of this subfamily in my Monks Soham garden, running 

 over and resting beneath leaves of lime-trees, doubtless attracted 

 by the honey-dew of the always present aphis, Pterocallis tilice, 

 Linn. But we have no hint of its hosts, though I have taken 

 it running over oak-leaves along with the beetle, Malthinus 

 punctatus, Fourc, and De la Garde has found it among the 

 muddy leaves in a pond at South Brent in Devon, where 

 "Hydrobius fuscipes was the only not purely aquatic species 

 present" so late as September 16th. My dates extend from 

 April 12th, in which month it is not rarely beaten from Scots 

 pine, through the whole summer to August 23rd, though none 

 have been noted in May. Golspie in Scotland (Yerbury) ; 

 Wymondley in Herts, one in "nest of Vespa vulgaris " (Butler) ; 

 Loudwater in Bucks and Foxhall in Suffolk (Newbery) ; Ollerton 

 in Sherwood Forest and Nether Langwith in Notts during June 

 (Carr) ; New Forest (Lyle) ; Surrey (W. Saundess) ; Holiday 

 Hill (Elliott) and Wilverley in New Forest ; Edwinstow in Notts ; 

 Aspall, Brandon, Tuddenham Fen, Bentley Woods on spruce 

 and Bucklesham Heath, in Suffolk. 



2. Exallonyx brevicornis, Hal. 



Proctotrupes brevicornis, Hal., I.e., p. 9, ? $ . Exallonyx 

 brevicornis, Andr6, p. 337. 



Italy (Kieffer) . Taken very rarely in the north of Ireland 

 during September (Haliday). I do not possess this species, and 



