

MU8. 



WAL8IN6HAM. _ 



( xm ) 



aberrant Prisnidze {Pathocerus Wagneri) ; the other (Tetra- 

 phalerus Wagneri) belonged to the Cupesidse,, and was remark- 

 able for the form of its head. He also exhibited <$ and £ 

 specimens of the curious Scarabeeid, Glyphoderes sterquilinusy 

 Westw., from North Argentina. 



Mr. H. St. J. Donisthorpb exhibited a glove burnt by dis- 

 charges of formic acid from the nests of Formica rufa. In 

 connection with the apparatus exhibited at the last meeting 

 to determine the strength of this acid, Professor Poulton said 

 that the discharges collected in the tubes fluctuated greatly 

 in strength, the strongest yielding a proportion of sixty 

 to seventy per cent, of anhydrous acid, a drop of which 

 placed by Mr. Holroyd on the back of his hand left a distinct 

 scar some days after the application. The discharge of 

 Dicranura vinula, he added, showed a strength of about forty- 

 five per cent., and Mr. F. Merrifield remarked that in 

 breeding the larvse the acid liberated by this species left a 

 yellow stain on the leno making it rotten. 



Papers. 



Mr. W. Schaus communicated a paper entitled "A Revision 

 of the American Notodontidse." 



Mr. H. St. J. Donisthorpe read a paper on " Cases of 

 protective resemblance, mimicry, etc., in British Coleoptera." 



Professor Poulton said that the facts were admitted in 

 the lepidoptera, and it was interesting to see how far they 

 were borne out in the coleoptera. The Ceridae, mimicked 

 other distasteful coleoptera, e. g. the Cantharidse ; the Lamidise 

 of Borneo were mimicked by other coleoptera, and on the 

 whole it would be found that the parallelism of facts 

 between lepidoptera and coleoptera was far greater than was 

 anticipated. The Rev. Canon Fowler, Sir George Hampson, 

 Mr. G. C. Champion, and Mr. R. Trimen continued the 

 discussion. 



October 2nd, 1901. 

 The Rev. Canon W. W. Fowler, M.A., F.L.S., President, in 

 the Chair. 



Exhibitions. 

 Mr. G. C. Champion exhibited a long series of Buprestis 



PROC. ENT. SOC. LOND., IV. 1901. C 



