last species. Dr. Lees reported it as *' not uncommon in the 

 valleys" in Upper Teesdale. Mr. Eoss found it commonly at 

 Bishop Auckland, and Darlington is one of the Manual localities. 

 Mr. Hed worth took one at Dunston and met with it occasionally 

 at Swalwell. Mr. Backhouse's notes have " Gardens, New- 

 castle." It is given in the Twizell list. Both Mr. Maling and 

 Mr. Eales reported it as generally common on the coast. It 

 occurs regularly on the Hartlepool sandhills, and may he taken 

 at sugar or Ragwort flowers. It is a variable insect, and is 

 said to approximate closely to some forms of the next species, 

 from which some think it is not distinct. I can only say I never 

 saw a dubious form here, and Mr. Gardner has pointed out to 

 me that the larvae of the two are distinctly different. 



23. A. Tritici, Linn. White-line Dart. 

 Agroiis Tritici. Staint. Man., vol. i., p. 226. 



,, ,, ITewm. Brit. Moths, p. 331. 



,, ,, Barr Lep. Brit. Isles., vol. iii., p. 336. 



„ ,, Meyr. Hdbk. Brit. Lep., p. 96. 



Lakva. Buck., vol. v., pi. Ixxii., fig. 2. 



Another coast species, and very abundant from Seaton Carew 

 at the Tees mouth all along the shores wherever there are loose 

 sandhills. It is one of the most variable species we have and 

 distinctive names were formerly given to many of the forms. 

 Thus in the Twizell list we find Sagittifera, Vitta, and Hor- 

 torum. Many large and well-marked examples occur, and it 

 has a golden-brown tinge in this district, very different from the 

 cold grey -brown of specimens from the south coast. 



24. A. agathina, Dup. Heath Rustic. 



Agrotis agathina. Staint. Man., vol. i., p. 227. 



,, ,, Newm. Brit. Moths, p. 333. 



,, ,, Barr. Lep. Brit. Is., vol. iii., p. 357. 



„ ,, Meyr. Hdbk. Brit. Lep., p. 95. 



Laeva. Buck., vol. v., pi. Ixxii., fig. 5 ; 0."Wils., pi. xxxiv., 



fig. 16a. 



