defitalis were the only Coliads received from that locaUty, in a very 

 large invoice of butterflies collected by Mrs. Ross. Since then I have 

 received from the Arctic Sea two other white females, same species, 

 and one yellow female. These three in markings agree fully with the 

 female first seen. Dr, Hagen thinks Palceno from the Swiss Alps is 

 identical with these American Arctic examples. I cannot say they 

 are not ; but something beside surmises will be required to make me 

 convinced that they are. 1 only know the two from dried speci- 

 mens. 



Interior is another thing from either Felidne or Palceno. They are 

 not even near together. J^clidne has white females only ; the under 

 side is of a lively green, densely dusted ; the disoal spot is small and 

 deep red ; the upper surface is greenish-yellow. Interior is brighter 

 yellow, lacking the green tint, as Mr. Scudder says ; the discal spot is 

 large, "the centre composed of silvery and pale pink scales mingled; " 

 the underside is a more sulphur-yellow, with scattered greyish scales 

 (almost immaculate, in fact), and it has yellow females with white 

 aberrations. (Mr. Scudder described the white only, and had but a 

 single specimen, as is stated.) 



After all, the Doctor, having, to his own content, demolished so many 

 species, in one case "uniting," as the word is, nine good species as 

 one, winds up in this way: "Conclusions. The species of Colias 

 found in North America are, from our actual knowledge as follows:" 

 Actual knowledge ! that is delicious. 



" T. Chrysotheme. -^ 



2. Philodice.^ -^ 



3. Interior. "^ 



4. Palteno. -^ 



5. Meadii. '^ 



6. Behrii. ^ 



7. Hecla. ^ 



8. Boothii. ^ 



9. Nastes." ^ 



How thankful we ought to be for this assurance. Nevertheless, I am 

 perplexed, because the statement is directly opposed to the principle 

 laid down on page 168, under which all this " uniting '' has been done. 

 Why did the Doctor not, on his own conditions, " unite " Hecla, Meadii 

 Boothii, and Philodice with Eurythemej Nastes and Paheiio (taking 

 Behrii to be an aberrant relation of the former), with Felidne, and so 

 cut his special centres of creation down to three ? And then by a 

 grand coup " unite " them all into one ? Queer conclusion from the 

 premises laid down ! My own conclusions, after studying the Report, 

 are that the author has not displaced a single one of the N. American 

 species of Colias, as enumerated in my Catalogue. If there are any 

 cases where two species may be seasonally dimorphic forms of one, it 

 has not been proved, and the suggestion that such relationship in one 

 case is possible, is mine. 



And as my friend closes with a quotation from Darwin. I will give a 

 few words from an earlier philosopher and sage, to wit, Confucius: 



