SOME LEPIDOPTERA OF THE BRITISH LINE IN FRANCE. 6l 



Notarcha {B.) ruralis, abundant everywhere. 



Ebulen crocealis, common on the Somme. 



Spilodes jiolealis, one specimen near Souchez. 



S. verticalis, common on the Somme. 



Pioneaforficalis, fairly common everywhere. 



Orohena extimalis, common near Corbie. 



Of the Hydrocampidfe, C. lemnata, H. nymphcpata, and 

 H. stagnata all swarmed in the Ancre Marshes, a district that 

 was disappointing in Lepidoptera. One reason for this is 

 perhaps the presence of extraordinary numbers of dragon-flies 

 of every variety of size and colour. One would sui:)pose that 

 these would keep other forms of insect life in check, but thev 

 certainly seem to have had little effect on the may-flies and 

 caddis-tiies, which, with the China-marks, are liable to attack 

 in both larval and imaginal stages. 



C. lemnata I also found very common about one small pond, 

 near St. Pol in late August. 



The Crambi have been very poorly represented, although the 

 ground in most places has a^^peared most suitable ; only a very 

 few of the commonest species have come my way. 



Of these the most noteworthy, is Crambus perlellus, which, 

 with var. warringtonellus, has been quite common in all districts. 

 Another form of a yellowish colour, possibly another sj)ecies, 

 was occasionally seen near Corbie and Albert. 



C. prateUus, common everywhere. 



C. tristellus, very common near St. Pol and Souchez. 



0. inquinatellus, less common in the same localities. 



C. culmellus, universally common. 



C. chrysoniLchellus and C. horluelliis, in the Ancre marshes. 



The number of Pterophori met with has been great ; the 

 number of species small. 



The commonest, as in Britain, has been A. pentadactylu , 

 which I have seen in most districts visited during the summer. 



Of the others C. ochrodactyla was common near Amiens ; 

 M. pliaodactylus, near St. Pol ; M. hipunctidactylus in both 

 places. 0. lithodactylus, Bruay and Souchez. I took L. lieni- 

 gianus near Arras. 



Of the remaining families I have not much to say. 



Tortrix podana was observed in Vaux-en-Amienois. 



T. xylosteana, in several places on the Somme, 



T. riheana was common everywhere. 



T. viridana apparently occurs in all woods when these are 

 oak-woods, but, as previously mentioned, was present in but 

 small numbers this year. 



T.forderana was common everywhere. 



Peronea ??iaccana, common in a wood near Souchez. 



P. sponsann, very common near St. Pol and Souchez. 



P. variegana, very common near Corbie and Souchez. 



