The Scottish Naturalist. 175 



" Conspersa {nana) are all dark ; the common form does not occur 

 there, though some specimens are somewhat paler than those that 

 I sent you." The figures in the Entomologist, 1880, plate 4, Nos. 

 12 and 13, represent pale specimens; the colours as given are 

 somewhat too yellow, when compared with those that I have 

 examined here. 



This variety is especially noteworthy in that it is not a mere 

 darkening that has taken place. Even the darkest specimen that 

 I possess does not show the deep blue-black ground-colour of the 

 type form, against which the white stands out so clearly. The dark 

 spots of the marking have rather become fainter, that is duller 

 leaden coloured, and the white spots, if I may say so, have become 

 greenish yellow, so that the colours seem to have approached each 

 other to produce such a uniformity. Time of flight is June. 



19. Luperina Haworthii Curt. ? (Celaena Haworthii 'Curt.) 

 H. Here. Mont.; Stgr. and Wk. Cat., Fen., Lap. 



The ground colour of the specimens is said to be redder and 

 more sharply denned than in the usual form, so that they would 

 exactly correspond to specimens from the Upper Harz. August. 



20. Hadena adusta Esp. Frey Alp.; Stdfs. Sil. Mont.; H. 

 Here. Mont. 



This species is described in the same way as the last, and there- 

 fore corresponds to the specimens of the Upper Harz. End of 

 June and July. 



* 21. Hadena exulis Lef. Stgr. IsL; Stgr. Gronl.; Wk. Norv. 

 Alp.; Mosch. Labr.; Sch. Fen.; (?) Frey Alp. ; (?) H. Here. Mont. 



It appears to be more and more becoming the general belief 

 that the forms Zeta Tr., Per nix H. G., Maillardii and exulis Lf., 

 belong to one species. Prof. Frey expresses himself of this opinion 

 as to the relationship of Pdrnix, Maillardi, and exulis. Unfor- 

 tunately, as I have not the material, I can form no opinion upon 

 this difficult question. It was for this reason that, when treating of 

 distribution, I introduced the statement bearing on that of Mail- 

 lardii with a query. 



Of the few specimens caught upon the Shetland Islands, I have 

 seen only a somewhat rubbed example, which approaches closely 

 to Maillardii in the cut of its wings, and nearly reaches the size of 

 this form. The colouring is gray brown ; all the cross lines are 

 indicated by dirty yellow; and the stigmas are filled up in the 

 same way. The reniform stigma towards the mid-vein is dirty 



