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two were also taken in the same district in 1847, and one in 

 1881. 



Mr. Mera exhibited varieties of Arctia caia, L., and said 

 they were a second brood of the species. 



Mr. Carrington remarked that they varied much in size and 

 markings from the typical form of ^. caia, and in his expe- 

 rience this was generally so when a second brood was reared. 



Mr. Adye exhibited two specimens of Laphygma exigiia, 

 Hb., taken by Mr. Druitt, of Christchurch. 



Mr. Weir exhibited a specimen of Pieris rapce, L., taken 

 by him during the week, and commented on the late appear- 

 ance of the specimen. 



Mr. Winkley stated that he had noticed an example of the 

 same species three or four days previously. 



Mr. W. West (Streatham) exhibited Gordius aqtcaticus, 

 L., and read the following notes : — ■ 



" The specimen was found in water at Interlaken, in 

 Switzerland. It belongs to the class Entozoa — sub-class 

 Cselelmintha, order Nematoda, family Gordiidse. It takes 

 up a temporary residence in the bodies of certain insects, 

 principally beetles ; the ova, which are oval, are swallowed by 

 the insect, and possess filaments which prevent them passing 

 out until developed. The longitudinal diameter of the egg is 

 about ^ of an inch, the girth being about ^. When fully 

 developed they leave the insect in order to deposit their ova, 

 which are ejected in long chains. The body is jointed, and 

 when dried up is capable of resuscitation with a little water. 

 They vary in length, the specimen shown being when stretched 

 out 195- inches. The sexes are easily separable, the tail of 

 the male being bifid, while that of the female is simple and 

 rounded ; they are generally found knotted together, but 

 swim like an eel." 



Mr. Manger exhibited a collection of Crustacea from the 

 Red Sea. 



Mr. R. Adkin exhibited a series of Retinea resinella, L., 

 together with specimens of the resinous nodules in which the 

 larva feeds, attached to twigs of the Scotch fir {Piims sylvestids, 

 L.), and sections of the same (Plate I., figs, 12 and 13), and 

 read the following notes : — 



^^ Retinea resinella, although a species well known on the 



