The Scottish Naturalist. 167 



along with the typical form (but less frequently), and be an 

 " aberration " in another country. 



In connection with this subject, may be considered the Dif- 

 ference THAT THERE OFTEN IS BETWEEN EXAMPLES OF THE 

 SAME SPECIES FROM NORTH AND SOUTH BRITAIN. Ill many 



species there is no difference ; in others the difference is more or 

 less marked, but not constant ; and in others the difference is so 

 well defined, and so constant, that the northern examples may be 

 considered as forming a "variety " or local race. It was my in- 

 tention to have indicated as far as practicable the differences be- 

 tween northern and southern examples, but I have, in the mean- 

 time, abandoned that intention except in the more striking cases. 

 I may mention however, that the differences (when there are 

 any) may be thus tabulated : — Northern specimens may differ 

 from Southern : istly, in Size \ 2ndly, in Colour; 3rdly, both in 

 Size and Colour : a) they may be larger, with (1) colour more 

 intensified {i.e., in the bright-coloured species the colour 

 brighter, in the dull-coloured, the colour infuscated) ; (2) 

 colour more dilute : or b) they may be smaller, with (1) 

 colour more intensified ; (2) colour more dilute. 



Finally, I have here and there introduced a short notice of 

 certain species that may possibly yet be detected in Scotland. 

 Doubtful Scottish species are distinguished by having a [ pre- 

 fixed. 



RHOPALOCERA. 



NYMPHALID^I Leach. 

 MELIT.EJA Fab. 



AURINIA Rott. (1775); Artemis S.V. (1776). Local. Eri- 



cetal. 

 Distribution— East. Tweed Forth Tay Dee Moray 000 



West. Solway Clyde Argyle o o 

 Lat. 55°-57°4o". Range in Europe. Central and northern, 



except the polar region's. Type. Centro-septentrional. 



Type in Britain. British. 



Time of Appearance— Imago. June, July. Larva. July-May. Food- 

 plant. Scabious (Scabiosa succUa). The alpine var. Merope Prun. (smaller 

 and darker^ may occur on some of the mountains. 



