1875.] 201 t Mann - 



Section of Entomology. November 24, 1875. 

 Mr. George Dimmock in the chair. Nine persons present. 



Mr. B. P. Mann exhibited male and female specimens of 

 Anisopteryx vemata, one of the males having undeveloped 

 wings, and male and female specimens of A. pometaria, in- 

 cluding three males with undeveloped wings and one female 

 with wings partially developed. 



The latter specimen is a much more striking example of the pos- 

 session of wings by a female than the one described in these Pro- 

 ceedings, xvi, 163-165. The right hind wing is nearly as much 

 developed as the corresponding wing in the normal males, the other 

 wings are more developed than in the specimen formerly described; 

 the antennae are pectinated, but the female showed no signs of herm- 

 aphroditism. 



In connection with the exhibition of these specimens, Mr. Mann 

 called attention to an article just published by Mr. Riley in the 

 Trans. St. Louis Acad. Sci., in which Mr. Riley gives in detail the 

 characters drawn from every stage of life of these two species, 

 showing that the differences in character of each stage would be of 

 specific value, independently of the characters in the other stages, if 

 no intermediate forms were found, which thus far has been the case 



December 1, 1875. 



Vice President, Mr. S. H. Scudder, in the chair. Twelve 

 persons present. 



Mr. Scudder gave a short account of the geographical 

 distribution of Vanessa cardui and V. atalanta, the two most 

 widely ranging species among the butterflies. The former 

 had been hitherto supposed by entomologists to be of Euro- 

 pean origin, but the speaker showed that the group of 

 Vanessa to which it belonged w T as confined to the American 



