HALIDAY ON PARASITIC HYMENOPTERA. 203 



like, within the chasm, or hovering on winnowing wings about 

 it. The innumerable rabbits which frequent this part of the 

 forest are" probably a considerable attraction to these birds. 

 Water-break -its -neck is after all but a little affair, though 

 striking from its peculiarity ; the looking down — for the 

 traveller can only see it to advantage from the top — on rocks 

 and trees, and the backs of the hawks and other birds as they 

 float across, is pleasing from its novelty. 



Approaching Kington, Stanner Cliff, to the left, is a much 

 finer object. The Insect-Hunter has never seen a better in- 

 stance of the beautiful effect of intermingled trees and rocks. 

 It is isolated and unconnected in character with the surrounding 

 scenery. It derives no beauty from any thing but itself, and 

 alone is perfect. It would make a most lovely picture, but 

 is a subject that a painter would never choose. It has no 

 foreground, no distance, — it is in itself the picture. At Kington 

 the Insect-Hunter entered England, and the same evening 

 reached Leominster. At that town he has spent many happy 

 days, and its natural history has claimed his particular atten- 

 tion ; but whether he detail the result of that attention, or pass 

 on in his narrative to other scenes, remains for chance and time 

 to determine. 



Art. XXVII. — Essay on Parasitic Hymenoptera, 

 By A. H. Haliday, M. A. 



(Continued from p. 106.) 



Gen. XI. — Opius. 



Palpi maxillares 6-articidati. Mandibular forcipatw, clypeo 

 contiguos vel rima transversa distantes. Occiput retusum im~ 

 marginatum. Abdominis segmentum 2 cum S concretum^ 

 reliqua discreta. Alarum anticarum areola disci antica 

 remota, cubitales tres. Posticos nervo recurrente disci auctai 

 in plerisque. 



Subgen. I. — Opius. 



Palpi labiales ^-articulati. Terebra linearis. Areola cubitalis 

 2 longior quam latior. 



