48 THE ENTOMOLOGIST. 



and the difference in the depth of colouring of the ordinary 

 markings. Our two common species, Bri/opliila miiralis and B. 

 perla, are especially variable, as is also B. algce on the Continent 

 of Europe. 



Bryophila, Tr., muralis, Forst. 



Of this species there are several distinct forms, joined by 

 intermediate varieties. That figured in Newman's ' British 

 Moths,' p. 244, is the type and is suffused with green, 



a. var. j9ar, Hb. — This variety is without the dark markings 

 which characterise the type ; the green is of a very pale shade 

 and much mixed with grey, giving the insect a very mealy appear- 

 ance. It is not so common as the type, but occurs occasionally 

 in most (if not all) localities with it. I have this variety from 

 Cardiff, and have captured it at Folkestone, Deal and Sandwich. 



ft. var. viridis, mihi. — Like var. par, this has the black 

 markings very indistinct, but there is in addition a total absence 

 of the grey colour which gives var. par its mealy appearance. 

 The whole of the fore wings are of a very rich green colour. I 

 have beautiful specimens from Folkestone, captured by Mr. 

 Austin, and some exceedingly rich specimens captured at the 

 same place by Mr. Wellman are in the cabinet of Mr. Tugwell. 



y. var. flavescens, mihi. — Like the type, but with the ground 

 colour of a yellow shade instead of green. I used to think these 

 were faded until I bred specimens from larvae taken at Deal 

 which had no green in the ground colour. 



^. var. pallida, mihi. — Marked like the type, bat the ground 

 colour of a pale whitish grey. I have this form from Deal and 

 Folkestone. 



E. var. ohscura, mihi.. — The ground colour of a dull brownish 

 grey, markings obscure, as in var. par, and a little darker than 

 the ground colour. It is the darkest and most obscure form of 

 the species I have seen. The type of this var. was captured by 

 Mr. Austin at Folkestone. I took one specimen of the same 

 form at Sandwich, in August, 1886. Herr Hoffmann (Hanover) 

 has specimens of this variety in his collection from the Simplon 

 (Swiss Alps). 



Bryophila, Tr., impar, Warren. 



Impar must not be confounded with B. muralis, y^ir.par, Hb., 

 as it is quite distinct from that variety. Many lepidopterists 



