352 NORTH AMERICAN CALLIMORPHA. 



POSTSCRIPT. 



Sometime alter liandiiig in the MSS. of tbe foregoiug paper, Mr. A. 

 <x. Bntler, ot tbe British Museum, writinj^- to me on other matters, 

 mentioned that he had recently made some study of the American 

 spec es of Hyjyercompa, and had made some discoveries which M'ould be 

 something- of a surprise. I immediately wrote him, stating the result 

 of my studies, and he very kindly sent me a statement of what he had 

 concluded. lie says: ''As you are about publishing on the genus, I 

 think it will be more for the advancement of science that I should send 

 you my facts than that you should repeat often repeated errors, aud I 

 should come in afterwards aud worry you by showing them to be so. 



'•The H. chjmene of Brown* takes priority of U. intcrrnptomarginata 

 by several years, and his species being figured in colors, there can be uo 

 mistake about it.'' 



'• The H. chimene of Esper, ])ublished later by several years thau that 

 of Brown, will therefore take the name of JT. colona Hiibu.-' 



After gixing some notes on the specimens in the British Museum, 

 with sketches of Mr. Walker's type forms, Mr. Butler adds : 



"I would make about six American species, thus: 



1. H. conscita^:: ccsta/fs v?iv.^=fuh'icosta var. and links to H. Carolina. 



2. H. Carolina (with links to H. chjmene aud H. colona)=R. chjmene var. 



3. H. contigua (linked to tl. clymcnc through //. Carolina var.) and links to H. colona. 



4. H. colona and nnincrons links to H. lecontei. 



5. H. lecontei and links to //. confinis (including H. mUilaris). 



6. H. confinis. 



"But for H. militaris the last-mentioned si)ecies would stand apart 

 as a fairly well-defined species." 



Mr. Butler considered the white species which I have named sufusa 

 as an albino form of the yellow clymene {colona). 



He has sent me sketches of some of the so-called intermediate forms, 

 which, however, are all referable without any hesitation as variations of 

 one or the other of the species I have recognized, and I cannot consider 

 them links. 



Mr. Butler, and with him the English entomologists generally, use 

 CalUmorpha for Jacobaa (which INIr. Butler says is a Lifhosian) and 

 uses Hypercompa Stephens, for dom inula and allies. 1 prefer to follow 

 Staudinger and other Continental authors who use Callimorpha in the 

 same sense that Mr. Butler uses Hijpcrcompa. 



Mr. Butler further considers that the American species are not con. 

 generic with the European, and proposes to use Ilaploa Hb. for our 

 species. The following are the differences enumerated by him: 



"Wings shorter than in Ilijpcrcompa, with shorter costal margin to 



"Peter Brown's Illustrations of Zoology, 4*'', London, printed for B. White, at 

 Horace's Head, Fleet street (1776), pi. xxxviii, p. 96. Mr. Butler sends the above 

 reference and the following copy of the description : " The Moth belongs to the PllAL. 

 NocT. sriKiLiNGUKS L.EVES of LiNN.EU.s; the under side of the wing is of the same 

 color with the upper side of the under wings, the black mark of the interior margin 

 of the upper wings only appearing. We shall name it Clymene." 



