8 4 



THE BRITISH NATURALIST. [April 



nor does the parallel hold as to the relative abundance of the two 

 varieties in a given species, as we believe in all such recent cases the 

 two occur in about equal numbers. Achatinella virgulata and Amphi- 

 dvomus perversus (citvinus) are typical cases in question. Continuing 

 the list of our marine shells which have occurred reversed, we must 

 chronicle the probably unique monstrosity of a sinistral Fusus gracilis 

 in Mr. H. K. Jordan's collection, from the west coast. Dr. Jeffreys 

 dredged a sinistral Natica catena, off Guernsey, and Purpura lapillus fell 

 to the lot of Bean at Scarborough in a similar state and by a curious 

 accident as told in *" British Conchology." This gives a total of 

 but seven species out of the whole marine list — a small percentage 

 when compared with the 18 or 20 terrestrial species known to have 

 occurred reversed. — Brockton Tomlin, Llandaff. 



Reports of Societies. 



ENTOMOLOGICAL SOCIETY OF LONDON. 



March 8th, 1893.— Henry John Elwes, Esq., F.L.S., F.Z.S., President, in the 

 chair. Mr. Frank E. Beddard, M.A., F.R.S., of the Zoologist Gardens, Regent's 

 Park, N.W. ; Monsieur Edouard Brabant, of Chateau de Morenchies. Cambrai, 

 France ; Mr. Frank Bromilow, of Avalon, St. Maurice, Nice, France ; Mr. Henry 

 Powys Greenwood, F.L.S., of Harnham Cliff, near Salisbury ; Mr. Frederick 

 Michael Halford, of 6, Pembridge Place, W. ; Lieutenant-Colonel Leonard Howard 

 L. Irby, F.L.S., of 41, Cornwall Terrace, Regent's Park, N.W. ; Mr. Bertram S. 

 Ogle, of Steeple Acton, Oxfordshire ; Herr Wilhelm Paulcke, of 33, Langstrasse, 

 Baden-Baden, Germany; Mr. Louis B. Prout, of 12, Greenwood Road, Dalston, 

 N.E. ; and Captain Savile G. Reed, late R.E., of Foyle House, Alton, Hants, were 

 elected Fellows of the Society ; and Herr Pastor Wallengren, of Farhult, bei 

 Hoganas, Sweden, and Herr Hofrath Dr. Carl Brunner Von-Wattenwyl. of Vienna, 

 were elected Honorary Fellows of the Society to fill the vacancies in the list of 

 Honorary Fellows caused by the deaths of Professor Hermann C. C. Burmeister 

 and Dr. Carl August Dohrn. Dr. D. Sharp exhibited a species of Enoplotrupes from 

 Siam, which was believed to be new, and which he thought Mr. Lewis intended to 

 describe under the name of E. principalis. This insect has great power of making a 

 noise, and the female seemed in this respect to surpass the male. Mr. W. F. H. 

 Bland ford said he wished to supplement the remarks which he made at the meeting 

 of the Society on the 8th of February last ou the larva of Rhynchop hones. He stated 

 that he had since found that only the first seven pairs of abdominal stigmata were 

 rudimentary. The posterior pair were well developed and displaced on to the 

 dorsum of their segment, which was thickly chitinised, and bore a deep depression, 

 on the margins of which the spiracles were situated. He suggested ihat the absence 

 of lateral spiracles was perhaps correlated with the wetness of the larval burrows, 

 and that it was a displacement of the posterior stigmata, usually supposed to be 

 restricted to aquatic coleopterous larvae. He added that dissection showed that 

 the posterior pair were the principal agents of respiration. Dr. Sharp and Mr. 

 Champion made some remarks on the subject. Mr. W. H. B. Fletcher exhibited a 



* Jeff. B.C. IV. 278. 



