NORTH AMERICAN LEPIDOPTERA. 235 



species, but I prefer to leave these species for the present as they iioav 

 stand. 



A minor and yet serious point is in the very title of the paj^er. 

 At the time it was written I felt very strongly that certain of the 

 species in our lists did not belong to our fauna, though undoubtedly 

 captured within the territorial limits of the United States. My ideas 

 on the subject were not definite and I followed in my title the time- 

 honored usage of referring to America, North of Mexico. Since 

 that time Mr. E. A. Schwarz has visited semi-tropical Florida and 

 has given us very definite ideas of the character and extent of its 

 fjiuna and flora. The discussion of this matter in the Ent. Society 

 of Washington, during which Dr. Horn drew a sketch of a limit of 

 our fauna from that of Mexico, scarcely less sharp than that sepa- 

 rating semi-tropical Florida, added still more to fix my opinions on 

 the subject. The title, therefore, does not accurately express the 

 scope of the present paper ; it should be Monograph of the Sphin- 

 ffidce of Temperate North America. 



The new species described, is : 



Euproserpinus Euterpe Edw., Ent. Amer. iv. 1888, p. 25. — 

 "Allied to, and very ])robably confounded in collecticms with E. 

 Phaton G. & R., but certainly distinct. Many examples of Phceton 

 have at different times passed through my hands, though strangely 

 enough, they have nearly all been 9 9 . Boisduval described 3Iacr. 

 Erato = Phceton from a 9 , fi'K^l Grote and Robinson's type also 

 belonged to that sex. I have one specimen of the S [ 9 ] in which the 

 antennse are without serrations, and distinctly thickened towards the 

 extremity exactly as in Hemarls and MacrogJmm., thus showing in 

 this respect a close relation to those genei'a. In the 9 [ S ] of this spe- 

 cies {Phceton) the antenna? are deeply and rather coarsely biserrate, 

 and at the same time are gradually thickened towards the extremity. 

 Another peculiarity of the species is the remarkably oblique exterior 

 border of the lower wings, which carries a black marginal band of 

 nearly equal width, not, however, reaching to the anal angle. In my 

 collection is a form, which, though in its system of coloration exactly 

 reseujbling Phceton, nuist from other characters be a distinct species, 

 if not representing another genus. It is this which I propose to call 

 E. Euterpe. In it the antenna are of equal size throughout, the tip 

 being furnished with a sharply curved hook. The serrations are 

 very deep and long, and when viewed through a lens each joint ap- 



