( xxiii ) 



produced by the insect caused a slight swelling and irritation, 

 much like a mosquito bite, for an hour or two. Possibly this 

 arises from a poisonous exudation from the surface of the 

 joint ; so far as I can discover there is no true poison gland." 



He remarked that Mr. Smith's observations, so far as they 

 related to the habits of the beetles and the effect produced by 

 their sting, agreed with those mentioned in Herr WandoUeck's 

 paper, and entirely confirmed them ; but it was to be regretted 

 that he did not state the names of the species, or describe the 

 method he employed in investigating the nature of the sting- 

 like segment of the antennfe, Herr "Wandolleck professed to 

 have discovered a poison gland in one species only — 0. albitarsis, 

 Pasc, and expressly stated that he failed to find it in another 

 species which he examined. 



The President said that the facts related by Mr. Smith 

 tended to confirm the view that these insects possessed a true 

 stinging organ, and inclined him to believe in the accuracy of 

 Herr WandoUeck's investigation. 



The Rev. F. D. Morice remarked that spines or similar 

 sharp structures were present on the antennfe of certain male 

 Hymenoptera, and he asked whether the sting-like segment 

 was found in both sexes of the beetle referred to. In reply, 

 Mr. Gahan said the terminal segment had the same form in 

 both sexes, but was longer and larger in the male in corre- 

 spondence with the greater length and proportion of the antenna? 

 in that sex ; the resemblance to the sting of a scorpion was 

 very pronounced in 0. albitarsis, in which the basal portion 

 of the segment was much swollen ; it was less so in the other 

 species of the genus. 



Pa2Jer. 



Mr. J. H. Leech contributed Part III. of his paper on 

 " Lepidoptera Heterocera from Northern China, Japan, and 

 Corea." 



