( xiv ) 



break off at their contracted bases. The sharp points being 

 barbed adhere with great force, and further penetration would 

 doubtless ensue if they were neglected. The bristles are 

 hollow, and may convey an irritant poison, but no aperture 

 has yet been found in the apex. There are longer hairs on 

 the larva which appear to produce no effect. 



Lord Walsingham called attention to the way in which the 

 hairs were barbed in Pityocampa processioned and some other 

 species. 



Mr. M'Lachlan remarked that it was well known that 

 urtication, in the case of some species, was caused by the 

 mere mechanical action of the hairs in the skin, but that 

 other species possessed glands at the base of the hairs which 

 contained an irritant poison. 



Mr. Poulton said that formic acid had been detected in 

 the hairs, as well as in the blood, of P. processioned, but that 

 in many species — including IAparis auriflua — irritation was 

 simply due to the presence of hairs which had penetrated the 

 skin, and that he had experienced great irritation after teariug 

 to pieces an old cocoon of that species. 



Lord Walsingham, Mr. Jenner Weir, and Mr. Slater said 

 that they had experienced greater irritation from handling 

 the larvae of IAparis chrysorrhoea than from the larvse of 

 IAparis auriflua. 



Mr. Philip Crowley exhibited a collection of Lepidoptera 

 recently received by him from the West Coast of Africa. 

 Amongst the specimens exhibited were several new or un- 

 described species of Mylothris, Diaclenm, Harma, Ehoma- 

 heosoma, &c. 



Mr. H. Goss called attention to the capture, at Oporto last 

 September, by Mr. G. D. Tait, of a specimen of Anosia 

 •plexippus. He remarked that, although some twenty speci- 

 mens had during the last few years been captured in the 

 South of England, only two other specimens had been 

 recorded from the continent of Europe. 



Lord Walsingham exhibited about twenty new species 

 belonging to Acrolophus, Anaphora, and other allied genera. 



