LÉPIDOPTÉROLOGIE COMPARÉE 85 



THE DISTRIBUTION AND VARIATION 



OF 



CŒNONYMPHA TIPHON in the United Kingdom. 



By H. Rowland-Brown. 



In a previous fascicule of this work M. Oberthùr has given a 

 lucid account of the distribution and variation of Cœnonymfha 

 tiphon, Rott., in the United Kingdom, and upon the Continent 

 of Europe. I trust, however, that having so generously conceded 

 me a place among the contributors to thèse Etudes de Lépidop- 

 terologie comparée, he will permit me to suggest several correc- 

 tions, and supplément his remarks both upon the nomenclature 

 of the species, and its relative distribution in Great Britain and 

 Ireland. 



NOMENCLATURE 



In the first place I can find no sound reason to justify 

 Staudinger substituting the name scotica for the hitherto accepted 

 laidion, Borkhausen; and I find that my opinion was shared by 

 the late Mr. J. W. Tutt, whose industry in unravelling the tangled 

 skein of nomenclature was boundless. Writing on " The Lepi- 

 doptera of the Bogs above the Zùricher-See " {Entomologistes 

 Record, Vol. XX, p. 245) he says " It may be noted that Staudinger 

 {Cat., 3rd éd., p. 66) has made a sad mess of laidion, Bkh., which 

 he refers to tiphon, von Rott., renaming the laidion form (Buckell's 

 northern form) scotica, Staud... it being quite évident that neither 



Staudinger nor hâve ever read the original descriptions of 



tiphon von Rott, and laidion Bkh., for the purpose of comparison, 

 yet the descriptions are readily obtainable. " 



