240 THE entomologist's record. 



E. Gibbs has a very useful paper on '* The genus Coeuoni/mpha," 

 where, besides tabulating the chief variations to which the several 

 species are prone, he discusses at some length the specific identity, or 

 otherwise, of some of the more obscure forms. Mr, W. J. Lucas 

 contributes notes on " Earwigs that breed in Britain," and treats 

 seriatim the species of our native Forficididac. It will be noted that 

 under the recently considered rare For/icitla lemei there are now 

 localities in every county from Berkshire to the Hcilly Isles. Follow- 

 ing this paper comes one on " Mimicry in Coleoptera " by Mr. C. J. 

 Gahan. To hear what such a well-known authority on the Coleoptera 

 has to say with regard to Mimicry in that order is interesting reading, 

 and we need only say here that Mr. Gahan is a stout " defender of the 

 faith " in mimicry as a real force in Nature. The Presidential Address by 

 Mr. A. E. Tonge is occupied with a detailed review of the work done by 

 himself with the ova of the British Lepidoptera, and we can say with- 

 out fear of contradiction that no similar Presidential Address was ever 

 before delivered on the primary stage of the Lepidoptera. The 

 " Abstract of Proceedings," which includes the reports of the field meet- 

 ings, occupies no less than 79 pages, and covers a very great miscellany of 

 Natural History (but principally entomological) matters. The report 

 of what was exhibited at the Annual Exhibition of Varieties on 

 November 28th runs to a number of pages and shows again what 

 an interesting exhibition this must have been. Mention must also 

 be made of the reports of the Annual Congress of the South- 

 Eastern Union of Scientific Societies, of the British Association 

 and of the Second International Congress of Entomology, to all of 

 which the Society sent delegates. Lastly, as usual, there is a most 

 comprehensive index, so that valuable matter need never be lost 

 sight of. There is one matter, doubtless owing to the Society's 

 laudable attempts at economy, that one cannot help regretting and 

 that is the change of printer. The printing is different to what it used 

 to be ; it is clean and clear, but the paper is poor and not good 

 enough, and the cover is a wretched introduction to the interesting 

 matter inside. — W.J.K. 



[The paper, both of the book and cover, was selected by the 

 Society's Publication Committee from a number of samples submitted 

 to them.— H.J.T.] 



" Guide to Photo-micrography." — We have received from Messrs. 

 E. Leitz, the well-known opticians, a work entitled " Guide to Photo- 

 micrography." It gives highly detailed practical instructions for this 

 branch of science, but is designed more especially for users of Leitz's 

 lenses and apparatus. A chapter is devoted to the description of 

 special apparatus for the photography of insects, from which the reader 

 may extract some useful information ; we think, however, that practi- 

 cal experience with less elaborate apparatus, would solve many of the 

 implied difficulties. There are also described (with illustrations) 

 apparatus for other branches of this work, such as the photography of 

 large sections, solid objects, stereoscopic photography and cinemato- 

 graphy, the last in conjunction with Leitz's new condenser for the 

 photography of living objects, bacteria, etc. The purely photographic 

 procedure is comprehensively treated, and there is a portion devoted to 

 the autochrome process. There are also tables of magnifying powers 

 which will be of service to users of Leitz's objectives and eyepieces. — 

 F.N.C. 



