APPENDIX 



CONTAINING 



ADDITIONS AND CORRECTIONS 

 TO THE CHECK LIST. 



Prepared under circumstances of remote isolation whicli deprived 

 the autlior of the advantage of certain works of reference he desired 

 to consult, the CHECK LIST contains some names -for which no 

 authority is cited, and in a few instances a change of the authority 

 given may be required. 



One new species has been added to the North American fauna during 

 the printing of the List ; five additional known species have since been 

 ascertained to occur in this country, and meanwhile several new varie- 

 ties have been published after the impression had passed the page 

 where they should respectively appear; these are brought into the 

 present connection. Most of them appear entitled to varietal recog- 

 nition; but in printing the names formally, for the convenience of 

 those who may desire to use such names in labelling, the author must 

 not necessarily be held to endorse them in every instance. 



The body of the List was printed, and some early copies distributed, 

 in Dee., 1873; but the publication of the volume was held over until 

 1874, to insert in the Appendix names then about being published. 



No. 41 ? The query indicates a probability that this is a variety of 

 No. 40, as held by Mr. Allen. 



No. 46. The United States form constitutes a variety of true mexi- 

 canus. See Eidgway, Am. Nat., vii, 1873, 603. 



(123) 



