164 THE ENTOMOLOGIST. 



interchange had taken place, in the others such an interpretation 

 involved many difficulties which disappeared when the mimetic phe- 

 nomena were interpreted as being due to the simple mimicry of one 

 form by another. Dr. Dixey stated that he did not consider the 

 Presidential chair to be a proper place in which to reply to Mr. 

 Marshall's criticism, and that he would therefore deal with the points 

 at issue on some future occasion. Mr. C. J. Gahan very strongly 

 supported the opinions advocated by Mr. Marshall, and expressed the 

 view that while Dr. Dixey professed to support MilUerian mimicry 

 yet his defence of Reciprocal Mimicry really constituted a severe 

 attack upon that theory. Mr. S. A. Neave said that as a result of his 

 field experience in Africa he was unable to accept the theory as to 

 the function of " double aposemes," but he did not mean thereby to 

 imply that he rejected every case of Reciprocal Mimicry. He sug- 

 gested that Alternate Mimicry might not be so uncommon a pheno- 

 menon as Mr. Marshall appeared to think. Mr. Tutt, Mr. W. E. 

 Sharp, and Professor Hudson Beare also made some brief comments 

 on the subject. — H. Rowland-Brown, M.A., Hon. Sec. 



The South London Entomological and Natural History 

 Society.— iVfarc/i 11th, 1909.— Mr. A. Sich, F.E.S., President, in the 

 chair. — Mr. West (of Greenwich) exliibited another section of the 

 Society's reference collection which he had remounted and arranged. 

 — Mr. South, a short series of Acidalia degeneraria received from Mr. 

 J. Walker, of Torquay, and pointed out that they were lighter in colour 

 than the Portland form. — Mr. Newman, specimens of Chora angu- 

 laria (viduaria), a pair of Phihalapteryx polygrammata ab. olivacea, 

 and ab. obsoleta of Camjytogramma fiuviata, and four melanic examples 

 of Notodonta ziczac. — Mr. Kaye, a drawer of aberrations and geo- 

 graphical races of Cosmotriche Rotatoria. — Messrs. Tonge, Harrison, 

 Main, Joy, Moore, Grosvenor, Pickett, Turner, Dr. Chapman, Dr. 

 Hodgson, and Rev. G. Wheeler, a large number of species, races, and 

 forms of the "blue" butterflies to illustrate Mr. Tutt's remarks on the 

 family. Mr. Tonge also exhibited photographic life-histories of the 

 "blue" butterflies. Mr. Tutt then gave a "Gossip on the Blue 

 Butterflies," summarising all that was known of their life-histories 

 and relationships, pointing out modern ideas of the grouping, and 

 emphasizing the necessity of the genera being based upon the sum 

 total of our knowledge of the species and their habits in all stages. 



March 25i/i.— The President in the chair. — Mr. A. E. Gibbs, 

 E.E.S., of St. Albans, Mr. A. W. Buckstone, of Chiswick, and Mr. 

 J. H. Rohde, of Reigate, were elected members. — Mr. G. B. Brown 

 exhibited specimens of Eubolia bipimctaria from Branscombe and 

 Dawlish, and pointed out their reddish suffusion compared with speci- 

 mens exhibited from Horsley. He also showed specimens of Agriades 

 corydon having slight reddish suffusion. — Mr. Hy. J. Turner, a box of 

 butterflies recently obtained from Columbia. — Mr. Tonge, an under 

 side of Acronycta psi, in which the central black spot was produced 

 towards the base as a line. — Mr. Bowman, a very pale female of 

 Nyssia hispidaria from Chingford. — Mr. Coote, ova of the same 

 species, and a female specimen of Anisopteryx cBcularia. — Mr. Kaye, 

 specimens of Chrysophanus dispar, and a short series of Xylina furci- 



