106 [May, 



plasm has been modified. And yet all this is brought about, as I think 

 will be admitted by those who have given any thought to the matter, 

 by the injection into the tissues of a microscopic drop of some peculiar 

 substance, the product of the insect. That such a substance can give 

 rise to these remarkable changes by merely stimulating or irritating 

 the parts I find it impossible to conceive. My own belief is, that it 

 must in some way play the part of a food, not, however, in the 

 ordinary sense of nourishing, but rather in that of combining and 

 uniting with the protoplasm or one of its constituents, after the 

 manner of a chemical agent, and so altering its molecular constitution 

 and affinities as to change it into something altogether different from 

 what it was before. 



Of such a kind is the nature of the food-bond which I would 

 suggest may underlie some of the phenomena of correlation, that is, 

 certain substances are secreted by the controlling organ, which com- 

 bine chemically with the protoplasm of the correlated part, and 

 endow it with new capabilities. 



Tarrington, Led bury : 



December, 1899. 



A NEW ERIOCRANIA FROM ENGLAND. 

 BiT THE RIGHT HON. LORD WALSINGHAM, M.A., LL.D., F.R.S. 



3102 (1). Eriocrania fimbriata, sp. n. 



AntenncB less than half the length of the fore-wings ; pale greyish fuscous. 

 Head dull greyish. Thorax fuscous, with some greyish hair-scales. Fore-wings 

 with vein 9 absent ; shining bronzy golden, without markings ; cilia yellowish 

 white. JExp. al., 11 mm. Hind-wings purple, with a slight bronzy sheen ; cilia 

 yellowish white. Abdomen fuscous. Legs greyish fuscous, the tarsi slightly paler. 



Type, S (13501), Mus. Wlsm. 



Hah. : England, near Wellington College Station (Berks), 14 — 

 21, IV, 1894 {A. H. Hamm). Two specimens. 



A small, plain, but very distinct species, immediatelj' recognisable 

 by its unicolorous fore-wings and almost white cilia, which form a 

 strong contrast to the colour of both fore- and hind-wings. Its form 

 of neuration is that of sparrma7inella, Bosc, and its allies, but it can 

 hardly be said to be closely related to any known species — its colouring 

 distinguishing it at a moment's glance. 



I am indebted to Mr. A. H. Hamm for the opportunity of de- 

 scribing this pretty and interesting Eriocrania, of which he has 

 generously permitted me to keep the type. 



