108 



bird, somewhat like a stone-chat, but of rather sHghter 

 build, Hew out from some bushes, seized a white butterfly, 

 which he believed to be Pieris brassicce, in its beak, dropped 

 with it to the ground with the evident purpose of securing a 

 firmer hold, and then flew off with it to the bushes, apparently 

 to its nest. He had no doubt that in this case the butterfly 

 was taken by the bird with the object of food, either for 

 itself, or more probably for its young. 



Mr. Step, on behalf of Mr. West, of Ashtead, exhibited a 

 number of specimens of Tcstacella haliotidea, the carnivorous 

 slug, which he (Mr. West) had found in numbers in a corner 

 of his garden, together with several eggs of the species. 

 The specimens were noted as being somewhat pale in colour. 

 Attention was called to the eggs, which are one sixth of an 

 inch in length, with an opaque elastic envelope, and are more 

 or less spindle-shaped. 



Dr. Hodgson exhibited numerous specimens of Celastrina 

 argiohis, bred from ova and larvas obtained in August and 

 September, igog. One female emerged in igog ; one 

 apparent female had male wings of pale grey-blue, with very 

 light margins ; two females and two males were of an excep- 

 tionally pale bright grey-blue. 



JUNE gth, 1 910. 



Mr. Edwards exhibited a store-box of American PierincB, 

 amongst which might be mentioned Catopsilia eiibale, with its 

 two forms of female ; and C. hilavia, the male of which has 

 paint-brush-like scent organs on the fore-wings. 



Captain Cardew exhibited a short series oiEpione advenaria, 

 including an unicolorous aberration, taken near Godalming. 



Dr. Hodgson exhibited the resultant imagines of a brood 

 of Pievis napi, from ova laid by a female captured in May, 

 igog (first emergence). The larvas were fed on Hcsperis 

 matronalis. Fifteen imagines (eleven males and four females) 

 emerged in July and August, igog, all being normal except 

 one. The rest of the pupae laid over the winter, producing 

 in May, igio, eleven males, twelve females, and four cripples ; 

 and twelve pupae died, mostly in the cold period at the 

 beginning of May, when the imagines were ready to emerge. 

 Several of these were more or less abnormal. One female 

 was very lightly marked on the upper side, being almost 

 identical with the average male examples. The discal 

 markings of the female were practically obsolete, a few 



