STEI.FOX : HEREHITARY CHARACTERS OF BRITISH MOTXUSCA. 275 



referred to above, hut nothing was mentioned regarding their size. 

 Now the size of the egg may vary considerably and that of the newly 

 hatched shell as much as a quarter of a whorl or as much as a milli- 

 metre in diameter. The smallest I have reared are the young of the 

 anreozonata from Co. j\[ayo of Experiment No. i, which are identical 

 in size with the normal young of H. hortensis which, of course, they 

 also resemble in size and shape and general outward appearance when 

 mature. Their darts, however, are quite typical of H. ?iemoraHs 

 except that they are rather smaller than usual. 



Since the publication of my former article, I have to thank Mr. 

 Hugh Watson, of Cambridge, for much kindly interest, as well as for 

 encouragement and a great deal of useful information regarding Prof. 

 Lang's more extended reseaches and modern advances in Mendelism. 



Discovery of Limax tenellus in the New Forest. — Mr. G. B. C. Leman, 

 son of my old friend and correspondent Mr. G. C. Leman, has been spending a 

 holiday beetle-hunting in the New Forest and sent me some slugs. I at once 

 suggested to him the possibility of the occurrence of L. tenellus — which had never 

 been recorded for vice-county 11, Hants. S. — indicating Hkely places to search. 

 He and his father and sister spent three days in close investigation of the primseval 

 beech woods, with the result that he sent me on the 12th September one of the 

 finest lots of this species that I have ever seen. Some I at once sent for permanent 

 preservation in the British Museum. They were found on red fungi among beech 

 and holly leaves, more particularly the latter, under the beech trees. I sent one of 

 the fungi to my friend Mr. W. Norwood Cheesman, F.L.S., of Selby, who kindly 

 informs me that it is Gomphidius visddus, a remarkably impermanent species — 

 which will appear in great abundance in particular years and then not be seen again 

 for several seasons in succession — the mycelium only availing itself of suitable 

 circumstances as to moisture, etc., to send up the visible portion of the fungus. Mr. 

 Leman sent also Anon ntinimtis and var. grisea, A. subfiisais var. ritfofusca, var. 

 cinereofusca, and var. fuliginea, A. ater var. castanea, var. hiteo-pallescens, and 

 var. plianheo-pallescens, A. hortensis, A. circitfusctiptus, Agriolintax agrestis var. 

 reticulata, and one young Umax cinereoniger var. efasciata. This discovery 

 completes the full tale of British slugs authenticated for vice-county 11, Hants. 

 South, the impossible Geomalactts maculostts being the only one not found. — 

 W. Denison Roebuck {Read before the Society, October 13th, 1917). 



Paludestrina jenkinsi Smith in Bucks. — This almost ubiquitous species is 

 now found in the Misbourne river at Denham, Bucks. Also in another stream one 

 mile south-west of Denham. The shells are all var. ffar/wrt/a Jenkins. Nine years 

 ago I noticed a colony by the Frayswater at Uxbridge, Middlesex, about i^ miles 

 from the above localities, but until this May I had not taken the species in Bucks. 

 All the three streams mentioned belong to the Colne system.— J. E. Cooper {Riad 

 before the Society, June 13th, 191 7). 



