( cxli ) 



He observed that his own experience as to the blue females 

 of P. icarus in England was directly opposed to that of Mr. 

 Grosvenor, and in support of this view he exhibited a series 

 of blue ?s, most of them entirely blue, taken this spring at 

 Notgrove in the Cotswolds, and for comparison the bluest 9 

 he had taken there previously, in which the blue scaling 

 was less than the least blue of this spring's captures. He 

 explained that he did not suppose that heat as a rule tended 

 to the production of blue $s of this species, since the $s 

 in Switzerland showed only traces of blue, and those in 

 Italy none at all, but his theory was that unusual climatic 

 conditions gave an impetus to the very marked tendency 

 to blue $s which was so characteristic of Britain, and which 

 is in fact confined to these islands and to certain localities 

 in Scandinavia. 



Mr. H. Rowland-Bkown expressed the opinion that sea- 

 damp might have some effect in producing blue in the 5s 

 of this grovip of " blues," and instanced the case of the south- 

 west coast of France in Charente-Inferieure, where the very 

 brilliant and wholly blue ab. coelestis, and the ab. syngrapha 

 which is blue up to the border, were the dominant forms of 

 the ^ oi A. thetis and A. corydon respectively. 



Species of the Genus Teracolus. — Dr. F. A. Dixey 

 exhibited specimens of Teracolus epliyia, Klug, and some 

 allied forms, together with drawings of their respective scent, 

 scales. He remarked that Teracolus ephyia was originally 

 described and figured by Klug fi'om specimens captured at 

 Ambukol in Nubia. The uppermost specimen in the exhibit 

 was from Meroe on the Upper Nile, close to the place where 

 Klug's specimens were taken. Next came a pair, $ and $, 

 captured by Dr. Longstaff near Khartum. The exhibit in- 

 cluded a specimen of T. lads, Butl., caught at Artesia in 

 Bechuanaland by Prof. Poulton. This form might be regarded 

 as the geographical representative of T. ephyia in South 

 Africa. With i-egard to the scent-scales, it was interesting to 

 observe that a fairly gradual transition in size took place from 

 one extreme to the other of the geographical series. All 

 these forms appeared to be somewhat rare. Prof. Poulton's 

 specimen of T. lais was the only one in the Hope Collection 



