248 THE ENTOMOLOGIST. 



form in the London district. — M. sordida. Many London speci- 

 mens are of a dark grey colour, without any of the paler ground 

 colour of the type. 



Apamea hasU'inea. I have a very dark purplish brown speci- 

 men captured in London. — A. gemina. The dark type is as 

 frequently taken in London as any part of the country in 

 comparison with the paler ah. reinissa, Tr. — A. leacostigma. I 

 have only taken the dark unicolorous form in London, never the 

 streaked and more variegated variety fibrosa, Hb. — A. didyma. 

 The black variet}^ ab. leucostigma, Esp. {lugens, Haw.) is very 

 frequent. 



Miana strigilis var. cetli'iops, Haw. Exceedingly abundant in 

 most places, as is also the dark reddish var. latriincida. 



Rusina tenchrosa. I have London specimens as dark as 

 those from Bannoch, which are much darker than the type. 



Agrot'is segetum var. nigricornutus, Haw. This black variety 

 is excessively abundant, as is also the dark variet}^ subatratiis, 

 Haw. — A. nigricans. Darker specimens occur in my own 

 neighbourhood than I can obtain from any other English locality 

 (except the Lancashire coast), but not so dark as the Scotch type. 



Aplecta nehidosa. Some specimens of this species are very 

 dark. 



Iladena trifolii. I have a number of London specimens 

 which are very dark in colour. 



Among the Geometers we find a large proportion showing a 

 tendency to melanic variation. The following are some of the 

 cases : — 



Nyssia hispidaria. Sometimes exceedingly dark specimens 

 are captured in Richmond Park. 



Hemerophila ahruptaria. Very dark suffused specimens are 

 occasionally captured. 



Boarmia gemmaria var. perfumaria, Newra. This latter 

 variety is a melanic form almost confined to the London District. 



Acidalia virgularia. Exceedingly dark specimens are occa- 

 sionally captured. 



Hyhcrnia leucophcaria. Black specimens frequently occur 

 throughout the London District. — H. defoliaria. Very, dark 

 (almost black) specimens are very frequently found. 



Oporahia dllutata. A large, almost unicolorous, dark grey 

 form is abundant in the S E. District. 



