2u4 ri^'oTcmber, 



lowest siibapical Uotch absent. Mr. Step, liviiif;- specimens oi Dorcus imraUclo- 

 pipedns (Coleopt.) from Wimbledon Park. Mr. Sich, pupal cases oi Aphelosetia 

 [Elachista) cerusella and tlie larval mines in a leaf of Phragmites communis 

 jrathered at Byfleet during- the Society's field meeting in July; and also the 

 three British species of the g-enus Ochsenheimej'ia. Mr. Buunett, Selenia tetra- 

 Imiaria from Farnborough, Kent. 



Auffust 26th. — The President in the Chair. 



Mr. H. Main exliibited the early stage of Mantis reliyiosn from S. France 

 and several spiders, and gave notes on their habits as observed by him. 

 Mr. Bowman, a male Parasemia plantaginis in which the hind right wing 

 was suftused ; it was of a brood of which 56 out of 60 pupae emerged in lour 

 days. Mr. Barnet, series oi Hydriomena furccda, including green, light-banded, 

 variegated, and very dark forms, from S. Devon ; very yellow forms of 

 Ematurga idomaria from Limpstield ; and a Plebeins aeijon from Oxshott with 

 an unusually wide, white submargiual band on tlie underside. Mr. Sich gave 

 details of the habits of the newly-hatched larva of Colcoplioru ihipennella. 

 Mr. P^dwards and Mr. Grosvenor, many forms of the pniyuiorpliic species 

 Pcqntiu nwmnon from the Indo-Malay Region ; Mr. Edwards then read a series 

 of notes ou the species, — H. J. Tukner, Ilu)i. Editor of Prvcetdings. 



THE BRITISH CHAOBOBINAE AND DIXINAE (DIPTEEA, CULICIDAE). 

 BY F. W. EDWARDS, B.A., F.E.S. 



The British mosquitoes having been dealt with in detail in Dr. W. 

 D. Lang's recently published Handbook, the time seems opportune for a 

 revision of the remaining subfamilies of the Culicidae, the Ghaoborlnae 

 {Coretlirinae), and Dixinae. The following notes, together with 

 Dr. Goetghebuer's paper on the Belgian species of Dixa (Bull. Soc. Ent. 

 Belgique, ii, 1920, pp. 18-29) should enable British collectors to name 

 their captures without much difficulty. Probably two or three more 

 species of Dixa will yet be found in this countrj^ 



Chaoborinae ( Cokethrinae). 



The name of this subfamily has to be altered, since the generic 

 name Corethra must give place to Chaohorus, which was established 

 two years earlier. The latter name was founded on the larva only, but 

 the rules of zoological nomenclature lay down the principle tliat such 

 names are valid, and the rule of priority must be applied to them. 



Chaohorus pallidus (F.) — This species is very distinct, on account of 

 the whitish colour, banded wings, and many-ringed legs. It is abundant 

 in many districts in the south and midlands of England, occurring, for 

 example, in vast numbers in several of the ponds in the Letchworth 



