36 THE ZOOLOGIST. 



Dr. T. A. Chapman exhibited immature specimens of Taniocampa 

 gracilis, T. gothica, T.populeti, T. munda, T. instabilis, and T. leucographa, 

 which had been taken out of their cocoons in the autumn, with the object 

 of showing the then state of development of the imagos. 



Mr. F. W. Frohawk exhibited a living specimen of the larva of Cartero- 

 cephalus palamon (Hesperia paniscus), hybernating on a species of grass 

 which he believed to be Bromus asper. The Rev. Canon Fowler and 

 Mr. H. Goss expressed their interest at seeing the larva of this local 

 species, the imagos of which they had respectively collected in certain woods 

 in Lincolnshire and Northamptonshire. Mr. Goss stated that the food- 

 plants of the species were supposed to be Plantago major and Cynosurus 

 cristatus, but that the larva might possibly feed on Bromus asper. 



Mr. C. G. Barrett exhibited a long series of remarkable melanic and 

 other varieties of Boarmia repandata, bred by Mr. A. E. Hall from larvae 

 collected near Sheffield. 



Mr. W. Farren exhibited, and commented on, four varieties of Papilio 

 machaon from Wicken Fen ; also a series of two or three species of Nepticula 

 pinned on pith with the " minutien Nadeln," for the purpose of showing 

 these pins. 



Canon Fowler exhibited specimens of Xyleborus perforans, Woll., which 

 had been devastating the sugar-canes in the West Indies. Mr. C. O. 

 Waterhouse stated that the larvae had done great damage to beer-casks 

 in India. 



Mr. E. B. Poulton showed, by means of the oxy-hydrogen lantern, a 

 number of slides of various larvae and pupae, in illustration of his paper, 

 read at the October meeting, entitled " Further experiments upon the 

 colour-relation between certain lepidopterous larvae and their surroundings." 

 He stated that he believed that nineteen out of twenty larvae of Geometridm 

 possessed the power of colour adjustment. Mr. F. Merrifield, the Rev. J. 

 Seymour St. John, and Mr. Jacoby took part in the discussion which 

 ensued. 



Mr. F. Merrifield read a paper entitled " The effects of temperature on 

 the colouring of Pieris napi, Vanessa atalanta, Chrysophanus phlaas, and 

 Ephyra punctata," and exhibited many specimens thus affected. In the 

 cases of P. napi, C. pldaas, and E. punctata, he remarked that they 

 corresponded with natural variations of these species in regions or seasons 

 associated with similar temperatures; and some curious effects produced 

 by severe temperatures on V. atalanta seemed likely to throw light on the 

 evolution of the complex markings of the Vanessas. Mr. Poulton, Dr. F. A. 

 Dixey, Mr. Elwes, Mr. Jenner Weir, Mr. Tutt, and Mr. Frohawk took part 

 in the discussion which ensued. 



Mr. Kenneth J. Morton communicated a paper entitled, " Notes on 

 Hydroptilida belonging to the European Fauna, with descriptions of new 



