1905.] 71 



case a dry calyx of thyme, and after hibernation begins to feed upon grass while 

 still ensconced in the cnlyx, which, however, is altogether abandoned before long in 

 favour of a case manufactured from a piece of a grass blade. On April 24th last, 

 in the course of a close an 1 successful search for young larvae of Pterophorus telra- 

 dactylus in the Isle of Purbeck, I came across some larvae of C. ILvella in their 

 grass cases, feeding on various grasses growing on the chalk. One of these had a 

 large case, measuring exactly 10 mm. in length, of very exceptional interest, for 

 instead of the thyme calyx case having been discarded, according to the usual habit, 

 when the grass case was made, the former had been retained, and evidently used as 

 the foundation stone of the latter, of which it now formed an integral part of the 

 anterior half of the dorsal surface. Another grass ease of smaller size had an old 

 thyme caljx case attached rather loosely by the mouth to it, but in this instance the 

 thyme case did not form any part of the grass case, and I suppose the larva had 

 accidentally made its case of the piece of grass to which it had left the thyme case 

 affixed. Four days previously I had the good fortune to find, in the same spot, 

 three of the thyme calyx cases of this species, which seem to be rarely met with ; 

 they were untenanted, and were attached to blades of grass upon which the larvte 

 had obviously fed before they had vacated them. — Eustace R. Bankes, Norden, 

 Corfe Castle : January 28fh, 1905. 



Two pupse of Aplecta nebulosa, Hfn., in the same cocoon. — Of some larvae of 

 Aplecta nebulosa that I was rearing last season, two, to my surprise, saw fit to 

 pupate in the same cocoon, which measured 32 mm. in length by 23 mm. in breadth, 

 ajid was made of thin, nearly transparent, white silk, being spun against the white 

 blotting paper which lay on the floor of the cage. The two pupse, which were quite 

 healthy, and normal in size and shape, lay side by side, touching one another, along 

 the middle of the cocoon, no attempt having been made by the larvae to construct 

 any partition between the respective sides of it which they occupied. — Id. 



Notes on some Diptera from the New Forest, 1904. — I spent some three weeks 

 in July last year at Brockenhurst, and gave most of my attention to Diptera. 

 Speaking generally, there seemed to me to be a scarcity of many of the usually 

 common species of Syrphidie (sensu lata) and a corresponding increase in certain 

 species of Tabanidx and Leptidx. The following notes on certain captures may 

 perhaps be considered worthy of record : — 



Therioplectes solstitialis, Mg., and Atylotus fulvus, Mg. — Odd specimens of 

 these two species were to be met with as usual in several places, but on one occasion 

 in a swampy piece of ground near Rhinefields they both occurred in considerable 

 numbers, together with other species of Tabanidx. Groing to the same locality 

 a day or two afterwards I could not find either of them. I saw no males. 



Tabanus cordiger,W. — When putting away my captures in the autumn I found 

 that I had taken five females of T. cordiger. I probably overlooked others through 

 their superficial resemblance to T. bromius, L. 



T. bromius, L , <? , and T. maciiVicornis, Ztt., $ . — I came across the males of 

 both the above settling on palings ; they were by no means easy to net, being shy, 

 and very quick on the wing. 



Atherix marginata, F. — I owe the capture of this species to Mr. F. C. Adams, 

 who wrote me on July 14th that he had taken it at Brockenhurst Bridge. I subse- 

 quently found both sexes abundantly in a number of localities. 



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