^yg [December, 



until the adults batch out that attention is drawn to them ; the small, roundish, 

 white pupae on the backs of the leaves either remain unobserved or the casual 

 observer fails to connect them with the swarms of Snow-fly or Ghost-fly, as 

 they are popularly called, which arise from the cabbage leaves and after a short 

 time settle down again like snow-flakes when they have been disturbed, 'i'he 

 systematic position ot A. proletella remained uncertain for some time. It 

 appears in the " Systema Naturae " as Phalaena {Tinea) lyroJetella, just as the 

 uninitiated to-day still regard it as a small moth ; and it was not until 1795 

 that Latreille assigned the insect iQl^i^ Aphidina, Burmeister in 1835 removing 

 it to the Coccina. The matter was finally settled in 1840 by Westwood 

 creating a new family, Aleyvodidae, for its reception. One of the best accounts 

 of the life-history of tlie Cabbage White-fly is to be obtained in Reaumur, 

 Memoires, vol. 2, pp. 302 et seq., 1736, and very little has been added to our 

 knowledge of the species since that date. With us, A. proletella may be ob- 

 tained, most years, throughout the whole twelve months. It seems to be very 

 resistant to cold ; Mr. Champion brought in a few days ago a vigorous colony, 

 and he informs me that it is still very abundant in his garden at Horsell, 

 Surrey. Situated as the pnpne are on the underside of the leaves of the host- 

 plant, control is difiicult, and probably the best and cheapest method is hand- 

 pickirg and burning of infested leaves. This species is not confined to the 

 genus Brassica ; it is also to be found on Chelidunium majus. I received in 

 July a number of pupae on the latter plant from Mr. E. E. Green. It is 

 generally stated that another species {A. brassicae Walker) is also found on the 

 cabbage, but I have not yet been able to satisfy myself as to whether this is 

 really a distinct species. I should very much like to know what other authors 

 have to say on the subject. — F. Laing, Natural History Museum, S. Kensing- 

 ton : November 12th, 1921. 



The " Wiener entomologische Zeitung." — The parts of this publication 

 issued during the war and subsequently have been sent us by the present 

 Editor, Prof. A. Hetschko, Kameral-Ellgoth bei Teschen, Silesia (Cechoslov. 

 Rep.), to whom all communications have now to be addressed. The death of 

 Edmund Reitter on March 15th, 1920, and the difficulty of continuing such 

 work at the present time, has caused delay in publication, one part only having 

 appeared per year during 1919 and 1920. In the " Festschrift " (Wien. ent. 

 Zeit. xxxiv, heft viii-x), issued on October 22nd, 1915, his seventieth birthday, 

 will be found a portrait, a catalogue of his papers written during the years 

 1869-1915 (949 in number), and an alphabetical list of the 955 genera or sub- 

 genera, 6296 species, and 1105 varieties or abei-rations described or named by 

 him. In the obituary notice published five years later (o/a cit. xxxviii, 

 heft i-iii), the number of titles of his papers is brought up to 1018. — Eds. 



Deliphrum crenatum Grav. in England. — In connection with Mr. Day's 

 note on this species (antea, p. 261), I took about a dozen specimens of the 

 beetle under the bark of a fallen larch in Dipton Woods, near Hexham, in 

 November, 1918. The capture was, however, not recorded at the time. — Geo. 

 B. Walsh, 41 Gladstone Street, Scarborough: November 1921. 



