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-artictdati. Mandibular forcipatw^ clypeo contiguw tel rima transversa distantes. Occiput retustim im-marginatum. Abdominis segmentum 2 cum 3 concretum^ 9'eliqua discreta. Alarum anticarum areola disci anticd remota^ cubitales tres. Posticce nerw recurrente disci auctw in plerisque. Subgen. I. — Opius. Palpi labiates ^articulati. Terebra linearis. Areola cubitalis 2 longior quam latior.
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