BIBLIOGKAPHY". 53 



Boavmia rhomboidaria var. perfumaria and Gnophos obsciiraria. 

 He then goes on to say : — " Aberration of colour in an insect 

 may be occasional and purely accidental, but when we see, 

 not single specimens, but a constant and invariable pre- 

 valence of this harmonizing with the surrounding soil, I can- 

 not but think that the cause may be mainly the powerful 

 impression of surrounding objects on the female during the 

 all-important period of life, viz., that of propagation, coupled 

 with an instinctive provision for the protection of its future 

 progeny; at any rate, the subject merits a further and deeper 

 investigation." I do not know that this theory has ever been 

 carried further, and I am inclined to think that Mr, Tugwell 

 is now more in favour of the " natural selection " theory from 

 Dr. White's point of view than any other. I think, myself, 

 with regard to this, that it would account for very few cases 

 of variation, and then only such as appear to me to be better 

 explained in other ways. {To be continued?} 



gglBLIOGRAPHY. 



Additions to the BRrnsH List and Changes in Nomenclature. 



COLEOPTERA. 



Heterocerus britaunicus, n. sp., Kuwert, Verhandlimgen der kaiserlich- 

 kbniglichen zoologisch-botanischen Gesselschaft in Wien, Dec , 1890, p. 

 535. The Rev. W. W. Fowler, has a specimen from Dumfries 

 {E.M.M., 133). . 



H.fusculns, Kies. The species known by this name in Britain = Zr. 

 pulchelh(s, Kies. (W. W. Fowler, E.M.M., p. 133). 



DiPTERA. 



Gonia ruficeps, Fin. becomes Gertnaria riificeps (R. H. Meade, 

 E.M.M., p. 125). 



Bigonicheta spinipennis, Mgn. = a var. of B. seiipennis, Fin. (R. H. 

 Meade, E.M.M., p. 128). 



Bigonicheta., Rnd. and Actia, Dsv. = subgenera of Thriptocera, Mcq. 

 (R. H. Meade, E.M.M., p. 128). 



Hemiptera. 

 Scolopostethus grandis, Horv. = 6". punctatus, Edw. ^. adjiinctus, D. 

 and S. = S. affinis, Schill. S. adjunctus, Edw. = .5. thotnsoni, Rent. S. 

 neglecius, Edw. = a slight var. (with the first antennal joints partly black) 

 of ^. thotnsoni {UoxYSith, E.M.M., p. 117). — J. W. Tutt. 



CURRENT NOTES. 



If any of the promised subscribers to my work on Varieties of 

 British Noctuce have not yet received a copy of vol. i., , I shall be 



