PKACTICAL HINTS. 



221 



insect is never found more than about ten miles inland, whereas />. 

 perla, occurs in almost every town inland, even as near London as 

 Dulwich, where I took them last year?— C. W. Colthrup, 127, Barry 

 Road, East Dulwich, S.E. June Uth, 1902. 



Venilia macularia two years in the pupal stage. — From some ova 

 of V. macularia which I had in 1900 the moths are just emerging, not 

 one having put in an appearance last year. — (Rev.) C. D. Ash, B.A., 

 Skipwith Vicarage, Selby. May Uth, 1902. 



j^CIENTIFIC NOTES AND OBSERVATIONS. 



The National Collection of British Lepidoptera. — As this 

 collection in the Natural History Museum at South Kensington is 

 now being rearranged, revised, and augmented, a convenient oppor- 

 tunity is afforded for making it what we all wish it to be, that is, 

 thoroughly representative of the Lepidoptera of the British Islands. 

 One very important improvement would be the addition, in as much 

 detail as possible, of the early stages of each species. It is hardly to 

 be hoped, however, that this desirable end could be attained in any 

 way approaching completeness without the assistance of the entomo- 

 logical public. We therefore venture to ask our readers to help the 

 Museum to effect this useful work by contributing whatever material, 

 either living or preserved, they may have to spare. There are already 

 larv* and pupae of a few species in the collection, but all the 

 examples are not good, so that gifts of ova, larvaj and pupte of any 

 species would be acceptable. Lists of presentations, with names of 

 donors, will be published in this Journal from time to time.— (Sir) 

 George F. Hampson, Bart., B.A.. F.E.S., Natural History Museum, 

 South Kensington. S.W. 



Protective resemblance in Lepidoptera. — Anaitis plagiata. — I 

 came across a splendid example of protective resemblance in this insect 

 last August. I was scanning a hawthorn hedge when my eye lighted on 

 a stump recently cut with most lovely graining, on examining it more 

 closely I was surprised to find it was a specimen of the above. The stump 

 had been cut in a slanting direction giving an elliptical surface, and just 

 the space for the moth to rest on. Euchelia jacob^jE.— Ifound this moth 

 plentifully last week on a hawthorn hedge at Wimborne, Dorset, where 

 it looked exactly like some of the leaves which had been attacked by 

 some kind of gall-fly, which were shrivelled and of a crimson colour. 

 — C. W. Colthrup, 127, Barry Road, East Dulwich, S.E. JiiueUth, 1902. 



JP>RACTICAL HINTS*. 



Field Work for August. 



By J. C. DOLLMAN. 

 1. — The larva- of Notodonta dromedarius are to be beaten more 

 frequently from an isolated and badly grown birch tree than from large 

 healthy ones. 



• Practical Hints for the Fieioj Lepidopterist, published May, iUOl. and 

 already almost completely out of print, contains 1250 similar hints to these, dis- 

 tributed over every month in the year. Interleaved (for collector's own notes). — Ed. 



