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that passed through the mussel during the process of breath- 

 ing. As to the statement that the mussels let the crabs in 

 and out of their shells, he had never seen this in those he 

 had kept under observation, nor did he believe that they 

 did so. 



DECEMBER ^^th, 1888. 

 T. R. BiLLUPS, Esq., F.E.S., President, in the Chair. 



Messrs. F. E. Fenton, M.R.CP., F. P. Perks, J. Scudder, 

 and W. Reid were elected members. 



Mr. R. Adkin exhibited Pygcera anachoreta, Fabr., and made 

 the following remarks: "In the Young Naturalist, m\\., 215, 

 Mr. C. S. Gregson, in an article upon the nativity of this 

 species says, ' There is a mealy whiteness about foreign 

 anacJioreta! The series exhibited were bred from a batch of 

 ova received from Mr. G. P. Shearwood, but beyond that he 

 could not give their pedigree ; he, however, pointed out that 

 the specimens varied considerably in tint ; some being quite 

 pale and agreeing with Mr. Gregson's description, while others 

 were of a rich brownish shade. He, therefore, concluded that 

 the tone of colour of the insect could not be relied upon as a 

 guide to its nationality." 



Mr. T. R. Billups read a paper on " Ichneumonidae bred 

 during the years 1887 and 1888, by members of the Society." 

 This paper was illustrated by the exhibition of examples of 

 the 80 species referred to, with the addition, in many instances, 

 of the cocoon, and in some cases of the larval host. 



