NOTES ON CONCHYLIS FLAVICILIANA. 33 I found K. arvensis an abundant plant in about half a dozen fields and hillsides within a mile of the place where I had first met with C. fiaviciliana, but in only one of these was there the slightest trace of larvse. The original locality is a valley, on the bottom of which is a strip of cultivated land perhaps 300 yards wide. The sides of this valley are either open downs or rough Jflowery fields ; they rise above the bottom perhaps 200 feet. C. flaviciliana was found in 1915 on oue side of this valley, from the edge of the cultivated strip almost to the brow of the hill. As one walks to the top of the slope, the hill is seen to be a flat plateau perhaps 100 yards in width, and crossing this one comes to a steep slo]3e leading down to another valley, very similar in appearance and growth to the first. In this valley K. arvensis is abundant, and as it certainly has not been cultivated for the last thirty or forty years, I felt sure that I should find C. fiaviciliana, but there was not the slightest trace of it. The new locality which I found was in the first valley, on the other slope to the original locality, and immediately opposite to it. Both these localities did not extend more than 200 yards up the length of the valley, and they were terminated at each end by a high, thick hedge, over which the -images did not appear to be able or willing to establish the species, although K. arvensis occurred freely both higher up and lower down the valley. No doubt before the sole of the valley was cultivated C . flaviciliana oecui3ied it also. I take it that the reason of the excessive localism of the species is, firstly, its inability to spread over any trifliug. obstacles ; and, secondly, its habitat must never have been cultivated, or at any rate mown, for of course this destroys the larvae if the mowing takes place in the month of August ; and^ if earlier, leaves the female without anything suitable to deposit her ova upon. January 6th, 1917. SOME STEPHANIDiE: WITH DESCKIPTIONS OF NEW SPECIES. By Claude Mokley, F.Z.S., etc. In connection with the proposed forthcoming monograph of this family of parasitic Hymenoptera throughout the world by Ernest A. Elliott, Esq., F.Z.S., etc., it were well to hereplace upon record the descriptions of two or three species found in the course of work thereon to be new. For their aflinities I am indebted ' to the monographer. This is a small and very specialised family, of which no more than some sixty-six species were recognised in 1900; since which time a comparatively large number ;of additional ones have been brought forward in
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