Exhibitions. 



Mr. O. E. Janson exhibited specimens of both sexes of 

 Ornithoptera victorix from Ysabel, Solomon Islands, recently 

 taken by Mr. Albert Meek, and remarked on the variation in 

 the colour and markings in the males. 



Mr. H. W. Shepheard-Walwyn exhibited a series of Euchelia 

 jacohsex taken by him at Winchester in July 1889. Among 

 the specimens exhibited were one $ of normal size with very 

 pale coloration : one S in which all the crimson was replaced 

 by lemon-yellow, without a trace of pink : and one S of normal 

 size but rather paler than the type common to the district. 



Mr. "WiLLOUGHBY GARDNER exhibited Ccelioxys mandihu- 

 laris, Nyl., from the Cheshire coast, a species new to Britain ; 

 and Osmia xanthoinelana, ^ and $ , and Osniia 2?arietina, Curt., 

 <? and ? from North Wales. 



Mr. A. J. Ohitty exhibited a specimen of Aglais urticse, 

 taken at sallow on March 28th, having a large portion of the 

 hind wings cut off so that when folded they were symmetrical 

 in outline. From their appearance he concluded they had 

 been bitten off by some animal, probably during hybernation. 



Dr. T. A. Chapman called attention to the remarkable 

 bilateral asymmetry in the male appendages of the Hemarid 

 Sphinx, Cephonodus hylas, Linn. He said that bilateral asym- 

 metry in insects was sufficiently rare to make it always notable. 

 In the male apophyses of Lepidoptera he had only been able 

 to find records in the case of the Hesperid genus Thanaos, 

 to which Scudder and Burgess first called attention — though it 

 seems highly probable that the facts can hardly have been 

 unobserved in so common a species as C. hylas. In Hylas the 

 right clasp is larger, rounded, but very imperfectly articulated 

 to the base, so as to be capable of very little movement, other- 

 wise, and compared with other Hemarid genitalia, one would 

 call this the normal clasp. The left clasp looks at first as 

 though it had been the same as the right, but had met with 

 some accident that had removed a large terminal disc, leaving 

 two lateral cusps. It is shorter than the right as about 

 3 to 5, and the arrangement of bristles and spines is quite 

 different to that on the right, if it is indeed possible to 



