NOTES ON VARIOUS INSECTS. 221 



palpi flavi : antennas corpore vix longiores articulis 21 — 23, 

 quatuor aut quinque interioribus flavis : mesothoracis dorsum 

 sulcis binis subtilissimis postice evanescentibus : metathorax et 

 pleurae Iseves : abdomen fern, ovatura convexum, segmento 1 

 obconico subtilissime rimuloso basi bicarinato ; 2 linea transversa 

 arcuata in fundo punctata prope basin impressum, et altera in 

 apice, utriusque sinu in basin abdominis obverso, pone illam sub- 

 tiliter rimulosum, arcu antico tumido laevi : venter carinato- 

 compressus pallidus : terebra" subexerta subulata deflexa, ut in 

 Leiophrontibus nonnullis et Euphoris. — Maris abdomen angustius 

 ovato-lanceolatum : pedes flavi unguibus fuscis : alae {fig. d.) 

 limpidae, squamulis flavis, stigmate fusco, nervis expallidis : 

 stigma ovato lanceolatum cubitum perpaulo prae medio excipit : 

 areola radialis oblongo-lanceolata alae Fig- d. 



apicem non attingit, cubitalis 2 brevis 

 antrorsum angustata et minor prima, 

 hsec apice summo nervum recurrentem 

 excipit : nervi recurrentis vestigium in 

 alis posticis. 



Variat mas antennis nigris, articulis 2 baseos tantum subtus flaves- 

 centibus, coxis posticis femorum margine supero tibiis posticis 

 tarsisque apice fuscis. 



Habitat per Ebudes Insulas et Hiberniam in foliis Betulce albce at 



infrequens, mensibus, Julio et Augusto. 

 Explicit Genus Opius. 



Art. XXVIII. — Notes on various Insects. By J. W. Bond. 



1. Combat of Ants. 



Sir, — I beg to call your attention to one of the most asto- 

 nishing phenomena regarding insects that ever came under my 

 notice. A relation of mine, Mr. R. Long, having employ- 

 ment near Hornsey church, in the summer of 1828, was 

 attracted by the singular actions of some sawyers, who were 

 at work at a short distance from the house in which he was 

 staying. On reaching them, he found they were annoyed 

 by an immense body of ants flying above their heads, numbers 

 of which were incessantly falling on them. The saw-pit was 



NO. Ill, VOL. IV. G G 



