REVIEWS AND NOTICES OF BOOKS. 251 



was served at 7 p.m., and Messrs. R. Adkin, B. W. Adkin, C. G. 

 Barrett, J. T. Carrington, F. J. Hanbury, J. Jager, W. J. Lucas, 

 R. McLachlan, R. South, J. W. Tutt, and G. H. Verrall were among 

 the guests. Letters of regret were read from the members Dr. P. B. 

 Mason and Mr. T. W. Hall for their absence on account of ill-health. 

 The host proposed " The Entomological Club," dwelt on the fact 

 that the meetings were to be considered rather social than scientific, 

 :and trusted that every one present would thoroughly enjoy himself. 

 This the guests evidently did, indulging in informal chat and re- 

 counting many strange entomological reminiscences. One will 

 never be able to estimate the value of these social evenings when 

 opponents in discussion and men of entirely different lines of thought 

 meet on common ground and forget their differences on the neutral 

 plane such meetings aftbrd. 



The Yorkshire Naturalists' Union held another field meeting on 

 August 4th and succeeding days in order to explore Arkengarthdale, 

 a part of Swaledale. The headquarters were at Reeth, and at the 

 meeting on Monday night, under the presidency of Mr. G. T. Porritt, 

 F.L.S., F.E.S., three new members were elected, and reports of the 

 work done were read. The wet weather prevented the entomologists 

 from doing any very serious work. 



Mr. Green observes {Eat. Mo. Mag., August) that the gregarious 

 larvae of various species of Centrotns are assiduously attended by ants 

 which emit a fluid from an extensile 3 -segmented organ at the 

 extremity of the body. When the insect is undisturbed, this organ is 

 withdrawn into the large conical segment which apparently terminates 

 the body, but is extruded immediately upon application by the attendant 

 ants. 



Mr. Gerald Strickland states [Ent. Mo. Mag.), that the rubber 

 solution supplied for repairing pneumatic tyres is an excellent adhesive 

 for fastening antennae, Avings, &c., on broken insects. 



Mr. Claude Morley confirms {Ent. 2[o. Ma<j., August) the 

 Braconid Helcoii anmdiconiis, Nees, as British, having captured a 

 ? specimen in Brantham Dale, Suffolk, on July 6th, 1899. 



:^EYIEWS AND NOTICES OF BOOKS. 



A Handbook of the Gnats or Mosquitoes, giving the anatomy 

 AND life-history OF THE CuLiciDAE, by Major Geo. M. Giles, I.M.S., 

 JVI.B. Lond., F.R.C.S. London : Bale Sons, and Danielson, 1900, 

 pp. viii-f 374. — Good English works on Diptera are not too 

 abundant, so that though the present work is intended chiefly for 

 the use of those Avho wish to study gnats in connection with the 

 whole subject of the causation and prevention of malaria and filariasis, 

 its value to the naturalist is clear and definite. The book gives us 

 first a series of chapters on the anatomy, life-history, and classification 

 of the Culicidae, extending to 115 pp. The author does not say that 

 he gives us here any original material, but we gather in looking through 

 it, as well as from a definite statement to that eft'ect, that he has gone 

 over and verified the various facts collected from authorities quoted. 

 These chapters should be useful not only to the investigator of tropical 

 diseases, but to the ordinary entomological student. In the systematic 



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