Euproserpinus Euterpe, A New Species of Sphingidae. 

 By Henry Euwarus. 



Allied to, and very probably confounded in colleciions with E. 

 Phaeton, G. & R., but certainly distinct. Many examples of /'//<7<'/o« have 

 at different times passed through my hands, though strangely enough, 

 they have nearly all been 9 9- Boisduval described Macr. Erato — 

 Phaeton from a 9, and Grote and Robinson's type also belonged to 

 that sex. I have one specimen of the (^ in which the antenna; are with- 

 out serrations, and distinctly thickened towards the extremity exactly as 

 in Hcmaris and iMacroglussa, thus showing in this respect a close relation 

 to those genera. In the 9 of this species {Phaeton) 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 oblie]ue exterior border of die 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 resembling Phaeton, must from olher characters be 

 a distinct species, if not representing another genus. It is this which I 

 propose 10 call E. Euterpe. In it the antennse are of equal size through- 

 out, 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- 

 pears to be furnished with a series of bristles, as in some genera of .-Ege- 

 ridcB. The thorax and abdomen are densely clothed with long hair, the 

 latter being very robust, and much shorter than in Phaeton, extending 

 very little beyond the wings. The wings are broader than in the more 

 familiar species, the primaries being entirely more rounded, and not pro- 

 duced at the apex, while the secondaries instead of being oblique upon 

 the margin, are very distinctly rounded, the apex being the opposite of 

 acute. In color, there is great resemblance between the two forms, 

 though in Euterpe the shading of the upper wings is brownish while in 

 Phaeton it is black. In Phaeton the basal line is geminate and slightly 

 oblique, the outer of the double lines turning slightly toward the base on 

 the costa. In Euterpe, it is single, thick, slightly dentate on its outward 

 edge, while behind it is a deep blackish brown shade reaching as far as 

 the cell, and there touching an ovate discal spot. In Phaeton the space 

 behind the basal line is grayish motded with black to a space about 2 

 mm. from the margin, and the discal mark is linear and not ovate. Be- 

 fore reaching the rather broad black posterior margin there are 3 faint 

 black lines from the internal margin which are obsolete before reaching 

 the costa. The inner t(\g(t of the posterior margin is sinuate, and very 



