IN THE BRITISH ISLANDS. 47 



distinct species, in my opinion altogether on insufficient data. New- 

 man figures both sexes of it in his ' British Moths,' p. 274, where it is 

 also treated as a distinct species. Staudinger treats it as synonymous 

 with extrema, Hb., which seems to me impossible. This variety had 

 not been taken in Britain for many years until quite recently. Mr. 

 W. Warren writes : " Some twelve years ago, Albert Houghton and 

 myself each took a concolor on June 25th. Both were much worn. 

 He threw his, a female, away ; I kept mine, a male, and it was sold 

 with the rest of my Macros " (in litt.). 



Chortodes, St., extrema, Hb. (bondii, Knaggs). 



That Hiibner's fig. 412 (extrema) is the type of this species there 

 appears but little doubt. It is not surprising that it was referred by 

 the continental entomologists, Treitschke, Ochsenheimer, Duponchel, 

 &c., either to fluxa (a variety oifulvd) as an aberration, or treated as a 

 distinct but unknown species, as bondii was unknown to continental 

 lepidopterists until a comparatively recent date, when the British 

 specimens were sent over. Dr. Staudinger refers to Hiibner's fig. 412 

 as an aberration of Guenee's concolor, which may itself have no claim 

 as a species. Hiibner's fig. 412 may be described as : " Wings about 

 the same shape as bondii. All the wings white, shaded to ochreous on 

 the outer margins ; nervures slightly darker on outer edge. Upper 

 part of fringe to anterior wings black, remaining fringes grey." The 

 black in the fringe is unknown in any species of the group LeucanidEe. 



a. var. bondii, Knaggs. First described in the ' Transactions of 

 the Entomological Society of London,' 18t>l, p. 183. Also figured and 

 described by Newman in his ' British Moths,' p. 276. Our British 

 bondii have no trace of the black fringe mentioned above, but this is 

 the only point of difference between bondii and Hiibner's extrema. A 

 sexual variation occurs, the males generally having a distinct 

 transverse row of dots, the females with this row almost or entirely 

 absent. Bondii is only taken, as far as is known, in England and Greece. 



Chortodes, St., arcuosa, Haw. 



The type of this species is described in Haworth's ' Lepidoptera 

 Britannica,' p. 260, as : " Alis sordide albo-lutescentibus strigis 

 duabus punctorum minutissimorum fuscorum." " Corpus gracilius fere 

 omnium hujus generis. Costa anticarum punctis ordinariis fuscis, 

 ultimo horum majore juxta apicem. Striga prima recta ante, secunda 

 arcuata pone medium, et inter has strigas in medio ala3 punctum soli- 

 tarium fuscum. Cilia pallida. Posticee ciliaque fuscescentia." There 

 is a great sexual difference, the female having been described by 

 Ha worth as a distinct species, under the name of minima (' Lepidoptera 

 Britannica,' p. 215, No. 153) as follows: " alis rufo-cinereis, maculis 

 duabus ordinariis strigisque tribus pallidioribus" ; " ciliis cinereis. 

 Posticse fuscse, ciliis albis." There seems to be but little variation in 

 the specimens of the same sex, except that some males are whiter than 

 others. Of airce, Frr., ii., pi. 162, figs. 1 3, Dr. Staudinger says, 

 " nimis variegata." 



a. var. morrisii, St. (?). All I know of this variety is contained in a 

 note written by Mr. Dale (' Entomologist's Eecord/ &c.,i., p. 34) and is as 



