16 THE CANADIAN ENTOMOLOGIST. 



the fact that it is an excellent representation of the common species 

 determined as Taeniocampa oviduca in collections ; this, therefore, shonld 

 be considered a synonym of grata, and rasilis remain a distinct species of 

 Hade //a. 



My comparisons were made with two copies of the " Zutrarge ; " a 

 fine one in the library of Mr. S. H. Scudder, and another more coarsely 

 colored in that of Harvard University. 



Air. Grote remarks that my Hadena vulgivaga is probably a re-descrip- 

 tion of H. apamiformis Guen. I am perfectly well acquainted with 

 Guenees species, and vulgivaga has not the slightest resemblance to it ; it 

 is, as I mention in the description, a new species allied to H. rurea. 



Mr. Grote states that my Glaea sericea seems to be founded on a 

 specimen sent him for determination, and which he considered identical 

 with his Orthosia ! apiata. I never sent a specimen of Glaea sericea to 

 Mr. Grote, and the species is entirely distinct from apiata. I did send 

 Mr. Grote a variety of apiata for comparison with his type, and this he 

 has probably confounded with sericea. 



Mr. Grote remarks that my Agrotis exertistigma is probably only a 

 Californian variety of altemata. After re-examining my material, con- 

 sisting of two specimens of the former species and about twenty of the 

 latter from Nebraska to Canada, I do not see any reason to change my 

 opinion, but I should be happy to do so if Mr. Grote can prove the species 

 identical. 



Mr. Grote refers my Xanthoptera nigrocaput as a synonymn of X. 

 Ridingsii Riley. The fact is that the author's copies of the first signature 

 of Mr. Riley's paper, containing the name and a few lines of the descrip- 

 tion of his new Xant/ioptera, were distributed some time before my paper 

 appeared (I did not receive a copy, however, until January, 1875). The 

 second signature, containing the larger part of the description, has not yet 

 appeared, to my knowledge (Jan. 25th, 1875.) 



Mr. Grote's attention having been called by me to his erroneous 

 arrangement of the species of Xanthoptera, he at once improves the 

 opportunity to found a new genus, Exyra. It is obvious that this genus 

 (even if a needful one) can not stand, as it is not accompanied by a word 

 of generic diagnosis. 



In a similar manner he founds a new genus for my semiapaia, after 

 having only a month before (see Proc. Ac. Nat. Sci., Phil., 7, 206, 1874) 

 entirely mistaken its generic characters and placed it in Apamea. 



