NOTES ON NEW AND RARE BRITISH LEPIDOFTERA. 133 



remarks that the only example of extrema he has seen (in 

 Dr. Boisduval's collection) appears to him to be nothing more 

 than a pale variety of/w/v«, but that still Dr. Herrich-SchafFer, 

 who has seen the original of Hiibner's figure, gives a de- 

 scription and figure (337) which represents pretty accurately 

 his concolor, though the male cei'tainly does not belong to 

 that species ; and he adds that both Hiibner's figure and 

 Treitschke's description are quite insufficient (in the absence 

 of the original specimen) to enable anybody to arrive at a de- 

 finite conclusion respecting them. As stated by M. Guenee, 

 Herrich-Schafier's figures and description of the 2 extrema 

 certainly accord well with concolor, Gn., but he figures 

 and describes the ^ as an insect of very diff'erent appearance, 

 and seems pretty positive that he represents the corresponding 

 sexes. 



Treitschke bears out this latter opinion, for he also de- 

 scribes two very dissimilar insects as the respective $ and 2 

 of Hiibner's extrema, remarking to the effect that ^^ an?/ one 

 would take them for distinct species were not the fact of 

 their being the sexes entirely heyond disjmte.''^ 



To us this same male appears to be a rich dark example 

 of Ilehnannij Eversmann, very pale females of which species 

 (in fact the females usually are very pale) are of frequent 

 occurrence, so that little doubt can remain but that the ex- 

 trema of Hiibner is far more likely to be identical with the 

 Ilelmanni of Eversmann than with the concolor of Guenee, 

 and d fortiori with Bondii. 



With a note from Dr. Staudino-er's valuable '^ Catalog^ue 

 of European Lepidoptera," I close these remarks. He 

 places Herrich-Schaflfer's figures (332 — 3) of extrema as 

 synonymous with the fulva of Hiibner; while under T. 

 extrema he refers to Hiibner's fig. 412, places the insect 

 represented by Herrich-Schaffer's figure 337 (437 by error 



