224 [October, 



different from that just described, having only an expanse of 50 mm., 

 with yellow blotches all distinct, and the two discal spots exceptionally 

 small. 



While on the subject of variation, I may also mention that in one 

 locality in the south of Scotland Erehia Mandina {Medea) frequently 

 occurs with the ocellated spots on both upper- and under-sides reduced 

 to such an extent that hardly more than the white pupils remain — a 

 condition parallel to that of the ah. Arete of Epinephile hyperanthus. 



Carluke, N.B. : 



August 2nd, 1893. 



CONCHYLIS IMPLICITANA, Wk.— A EETEOSPEOT. 



BY THE RIGHT HON. LORD WALSINGHAM, MA., LL.D., P.R S., &c. 



My attention has been called to some remarks on Conchylis 

 Keydeniana, H.-S., and impUcitana, "Wk., published in the Ent. Mo. 

 Mag., XXVII, 2 — 3 (1891), and which I readily admit may become a 

 source of error if taken to prove that the British species of Conchylis 

 occurring on Anthemis cotula should be rightly called Seydeniana, 

 H.-S. I should have stated that Herrich-Schaffer's description seems 

 to apply to this species only in part, and that as the figure which ac- 

 companied it had been recognised as distinct, Wocke was justified in 

 limiting the name to the form figured, which had long been known as 

 Heydeniana, Mn. (MS.), whereas the northern form w^as known and 

 was referred to by Herrich-Schaffer in his description as Heydeniana, 

 Koll. (MS.). 



Wocke, although justified in this limitation, was in error in be- 

 lieving that impUcitana, 7i. (MS.), was really the northern species 

 Heydeniana (Koll. MS.), H.-S. text, whereas it was in fact, as shown 

 by a specimen in the Zeller collection, Heydeniana (Mn. MS.), H.-S., 

 fig. 369. 



I was evidently misled by Wocke's error in misapplying the name 

 impUcitana to the northern form when I had the original specimen 

 with Zeller's own label ''"ImpUcitana, Man., 184<9," before me. It is now 

 clear that the specimen was so labelled before the northern and 

 southern species were separated by Wocke, and before he had thus 

 fixed the names by preferring w-ith good reason Herrich-Schaffer's 

 sufficiently correct figure to his obviously mixed description. Wocke's 

 transposition of the two names may be traced to his having apparently 



