26 CATALO&TJE OF BUTTEEFLIES. 



Force, Teesdale, in 1860, in the Tyneside Naturalists' Trans., 

 vol. V. It was met with in Upper Teesdale at the Field Meet- 

 ing held there 16-18 July. See Trans., 1861, p. 7. Mr. Wm. 

 Dinning found it abundant at Hamsterley. Mr. Hedworth 

 found it in the Derwent district. In 1860 it was very plen- 

 tiful at Black Hall Rocks, on the sandy flat, south of the rough 

 banks. In 1861 I took a solitary specimen, and have never 

 seen it since. Scahiosa succisa grows freely on all the banks, 

 but most abundantly a mile and a half north of this place, but 

 I never found the insect so far along. The last record I have 

 of it is that Mr. Henderson took one only at Chopwell in 1872. 

 It is a species that occasionally moves its head-quarters, and I 

 think it will yet turn up again on the coast between Hart- 

 lepool and Sunderland. The specimens I took at Black Halls 

 were of the Scotch form, var. Scotica, Robs. 



SATYRID^. 

 EREBIA, Bdv. 



25. Erebia Blandina (Fab.). I!^oethekn Beown. 

 Erehia Blandina. Staint. Man., vol. 1, p. 29. 



,, ,, Barrett's Lep. Brit. Is., vol. 1, p. 216. 



,, Medea I^ewm. Brit. Butt., p. 82. 



,, Mthiops. Meyrick, Hdbk. Brit. Lep., p. 340. 

 Laeva. Buck., vol. 1, pi. vi., fig. 1. 

 This interesting species, which had previously only been taken 

 in Scotland, was first recorded as an English insect by Mr. 

 Backhouse, who found it abundantly in Castle Eden Dene. It 

 is still abundant there, and occurs in all open grassy places down 

 almost to the sea level at the mouth of the Dene. Its range 

 extends westward as far as the Dene runs, and I have found it 

 plentiful on the banks of the railway between Thornley and 

 "Wellfield stations and in Edderacres Wood adjoining. The 

 wood extends to the turnpike and beyond, but I never found 

 Blandina on the west side of the road. This has often struck 

 me as being very singular, and also that the Butterfly does not 

 occur in any portion of Hesleden Dene, which approaches in one 



