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'' We have in America, as in Europe, the one-brooded. 

 P. bryonice in the far north, which is an exaggeration of the 

 winter form Oleracea hyeinalis,z.n6. z^^;«cj« of the double-brooded 

 species further south. Then there are the summer broods of 

 these last, viz. : Oleracea cBstiva and pallida ; and finally in 

 West Virginia the single-brooded virginiensis, which is an 

 exaggerated Oleracea cestiva. This insect comes out in 

 spring, and is single-brooded like Gonepteryx or AnthocJiaris. 



"So to tabulate Pieris napi in America: — 



Single-brooded. Winter brood. Summer brood. Single-brooded. 



'^ox\h.Qxx\^bryoni(z. Eastern, oleracea , oleracea Southern, vlrg-im'ensls 

 hyemalis cestiva. 



Western venosa dcn^pallida. 



Eliminate the double-brooded race, and you have bryoni(E 

 like G. rhainni, and virginiensis, like G. cleopatra ! 



" Now I do not pretend that these cases are exactly parallel, 

 or that the two-brooded napi is likely to be lost ; but to my 

 mind, it is sufficiently like the hypothetical case of the two 

 species of GDnepteryx to be convincing of \he possibility of my 

 theory. 



AUGUST 2zrd, 1888. 

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



Mr. H. A. Cruttwell was elected a Member. 



Mr. J. T. Williams exhibited nine specimens of Deilepliila 

 gain, Schiff, taken by him at St. Margaret's Bay, Kent ; and 

 stated that Mr. F. Oswald had taken eight others ; the whole 

 number were taken flying over flowers of EcJiiuni vulgare, 

 L. 



Mr. Wellman exhibited bred examples of a second brood 

 of LobopJiora viretata, Hb., RJiodophcea advenella, TAnz., and 

 also a melanic specimen of Veniisia cambrica, Curt., from 

 Sheffield, which was referred to at the previous meeting, and 

 specimens of Sesia ciiliciforniis, L., with yellow bands. 



Mr. R. South exhibited a melanic example oiPlusia gainnia, 

 L., and called attention to a curiously serrated line on the 

 hind margin of the primaries, which formed a distinct metallic 

 W. 



