Geographical Distribution of the British Butterjiies. 231 



Though Canonijmpha Davus is unknown in southern England, 

 simply because we have no boggy mosses there, yet in Bavaria we 

 meet with mosses similar to Chat Moss, near Manchester, and 

 there this insect is again abundant. 



From a comparison of the species which occur in Ireland with 

 those found in Scotland, it appears that all the 25 generally 

 common species occur in Scotland, though 3, Argynnis Selene and 

 Euphrosyne and Thymele Alveolus, have not yet been detected in 

 Ireland. Of the more southern forms 14 occur in Ireland, but 

 only 5 in Scotland. On the other hand, one of the mountain 

 species common in Scotland, Erebia Blandina, has not yet been 

 found in Ireland ; and one straggler, Vanessa Antiopa, has occurred 

 in Scotland, but not in Ireland. 



In short, 6 species, Adippe, Selene, Euphrosyne, Alveolus, Blan- 

 dina and Anliop)a, occur in Scotland and not in Ireland. 



On the other hand, 1 1 species, Hyale; Rhamni, Sinapis, Tithonus, 

 Athalia, Litcina, Betulce, Arglolus, (Egon, Sylvanus and Linea, 

 occur in Ireland, but not in Scotland. 



Five families of Butterflies occur with us, two of which are sub- 

 divided into sub-families. 



Thus the first family, Papilionidce, is divided into Papilionidi 

 and Pieridi. 



The second family, Nymphalidce, is divided into Satyridl, 

 Nymphalidi, Vanessidi and Argynnidi. 



The three remaining families are Erycinidce (of which it is re- 

 markable that we have only a single representative in Europe), 

 Lyc<snidce and Hesperidce. 



From the accompanying table it will be seen how these families 

 are respectively distributed in England, Scotland and Ireland. 



The 25 general and common species are thus distributed 

 amongst the families : — 



4 Pieridi Pieris Brassicce, P. Rapce, P. Napi and Antho- 



charis Cardamines. 



6 Satyridi . , . . Lasiommala Algeria, L. MegcBra, Hipparchia 

 Senfcle, H, Janira, H. Hyperanthus, CoenO' 

 nympha Pamphilus. 



3 Vanessidi .... Vanessa Urtic^e, V. Atalanta and Cynthia Cardui, 



4 Argynnidi . .Melitcea Artemis, Argynnis Aglaia, Euphrosyne 



and Selene. 

 6 Lyccenidce . . Thecla Quercus, T. Rubi, Chrysophanus Phltsas, 



Polyommatus Alsus, P. Alexis and P. Agestis. 

 2 Hesperidce . . Thymele Alveolus and Thanaos Tages, 



