40 THE CANADIAN ENTOMOLOGIST. 



of " sub-costal " is misleading, in fact wrong, because the uppermost vein 

 is the costal. 



And the arrangement of families was adopted " merely because of its 

 simplicity," but wherein that consists it would be hard to discover. It is 

 not a natural arrangement ; if it was, the Satyridas would next precede the 

 Hesperidae. However there has been a fashion these last years for arti- 

 ficial grouping of the butterflies, and our author is not without reputable 

 company in his choice. 



In conclusion, the illustrations in this work, poor as they are, will 

 answer some purpose ; the text, so far as it is incorrect, is worse than 

 nothing. The field is still open for a well-illustrated book on the same 

 butterflies, written by one who is acquainted with his subject. 



W. H. Edwards. 



CORRESPONDENCE. 



ON THE GENUS QUADRINA. 



Dear Sir, — I notice the remarks of Mr. Smith, in " Entomologica 

 Americana" (vol. ii., 1886, page 124), merely to state that in my original 

 description I comment upon this singular genus and say that " it may be 

 catalogued next to Gloveria." I further regard its afiinities to the Cerato- 

 cainpidce, and I intended to place it with this group in my catalogue. By a 

 mistake of the printer it was thrown into the preceding group. It is clear 

 that I regarded the insect as allied to Citheronia, and Mr. Smith's re- 

 marks as to Hemileuca are uncalled for. I say distinctly, "altogether it is 

 removed from Color adia" (Papilio, I., 175). In fact, I regard Quadrina 

 as the remains of an old type, synthetic, in that it embraces characters of 

 existing sub-families of the Bombycidce. It is an example of what I have 

 called attention to, viz., the existence in America of older types than else- 

 where, such as the Paleohesperidce of my classification. I am decidedly 

 opposed to the idea that Quadrina is a Cossid. I regard it as a type be- 

 tween Gloveria and Citheronia. I classed it with the Ceratocampians. 

 We know neither the male nor the larva. It is premature to be exact as 

 to its location. It may well afford a new sub-family type. I feel con- 

 fident that the larva will be an external not an internal feeder. It may 

 point to the way in which the Ceratocampians and the internal feeders 

 with similar habitus are phyllogenetically related. 



A. R. Grote, Bremen, Germany. 



