80 
THE entomologist’s RECORD. 
points overwhelmingly to the influence of “ natural selection ” 
rather than that an excess of carbon in the soil, after assimila- 
tion, first, by the plant to form its tissues, and then by the 
larva when it eats it as food, should act in some unknown 
way on the larva and thus affect the colour of the moth, in 
the final stage of its existence. 
I have gone thus fully into what has been written con- 
cerning “ this physiological aspect of melanism,” but I think 
there has been very little written which will strike practical 
lepidopterists as having any value in causing us to look on 
melanism generally, as a result of phytophagic variation. 
{To be continued.) 
giBLIOGRAPHY. 
Additions to the British List and Changes in Nomenclature. 
Diptera. 
Macquartia spinicincta^ n. sp. Previously confounded with M, celebs 
(R. H. Meade, pp. 156-157). 
Polidea crassitarsis replaces P. simplicitarsis (R. H. Meade, 
p- 157)- 
Hemiptera. 
Dactylopius walkeri^ n. sp. from specimens taken at Manley, Cheshire, 
Sept., 1890, on Agrostis vulgaris (R. Newstead, E.M.M, 164, with 
plates). 
Eriococcus insignis, n. sp. from specimens taken at Ince and Manley 
(Cheshire), August and Sept., 1890, on Agrostis vulgaris, Runiex, Pteris 
and Ulex (Id., E.M.M. , 164-165, with plates). 
Eriococcus fraxini, n. sp. at Ince, August, 1890, on bark of Fraxinus 
excelsior (Id., E.M.M., pp. 165-166, with plates). 
Lepidoptera. 
Plusia bimaculata, St. = /^. verticillata, Guen. {acuta, Walk.) (P. B. 
Mason, EM.M., p. 163). 
Viminia, Cuspidia and Bistdcia, Chapman. Incorrectly referred by 
Mr. A. G. Butler to Pharetra, Trm?ia and Arcto??iyscis of Hiibner 
respectively (see “ Scientific Notes” in this number). 
Erastria venustula, Hb. Referred by Mr. A. G. Butler to the genus 
Hapalotis, Hb. with much doubt as to this genus being sufficiently 
characterised. 
Hydrcecia lucens, Frr. (with vars. noY. pallida, grisea and rufa)\ Cara- 
drina superstes, Tr., H.-S. (with var. nov. suffusa) are treated as distinct 
sub-species (J. W. Tutt, The British Noctuce and their Varieties). 
Helotropha leucostigma var. limina, Haw. = var. inter 7 uedia, Tutt; 
Gortyna ochracea var. flavago, Esp. = var. flavo-auratu 7 u, Tutt (J. W. 
Tutt, The British Noctuce a 7 id their Varieties). 
Vimima 77 ie 7 iya 7 ithidis var. salicis, Curt, is referred to V. ru 77 iicis var. 
salicis, Curt. (J. W. Tutt, The British Noctucz a 7 id their Varieties). 
