NORTH AMERICAN LEPIDOPTERA. 147 



clasper at its inferior margin. The supra-anal plate is small, tri- 

 gonate, the hook short, bi'oad, flattened above and somewhat re- 

 flexed at the side margins, not much curved ; the inferior process 

 flattened, trigonate, but little shorter than the superior. 



The characterization of the genus, except as to the genitalia, is 

 largely taken from Prof. Fernald's paj)er on Sphingidse of New 

 England, and the shorter note in Ent. Am. ii, 2, — it having been 

 found correct in all essentials. I united Ampelophaga and Darapsa 

 under the later term in my synopsis of genera. The term Darapisa 

 had been previously restricted to a West Indian form not congeneric 

 with our species, and Prof. Fernald uses Boisduval's term Everyx for 

 our species. Bremer and Grey's generic term, however, has priority 

 of both Boisduval's and Walker's, and Butler says that versicolor is 

 perfectly congeneric with the typical species, w'hile he leaves mijron 

 and chcerilvs in the Hiibnerian genus Otus. Hiibner's term, how- 

 ever, is pre-occupied. Fernald pointed out the spinulation in the 

 tibije of chcerilus, and Mr. Grote thereupon separates that species 

 from versicolor and myron, which he calls Ampelophaga, under the 

 term Everyx. 



The spinulation of the tibise is so slight and so unimportant a 

 feature in view of the general agreement in all stages that the sepa- 

 ration seems hardly justifiable. 



The species are all Eastern, and mostly double brooded. They 

 are all occasionally attracted to sugar and light. 



The species may be divided as follows : 



Anterior and middle tibise spinose elioeriliis. 



Tibise not spinose. 



Under side of primaries reddisb and gray without yellow markings.. lliyroil. 

 Under side of primaries green, with yellow markings versicolor. 



A. cheerilus Cram., Ex. iii, 91, pi. 247, fig. A, Sphinx ; Hiib., Verz. 142, Otus; St. 

 Farg. ct Serv., Euc. Meth. x, 441, Smerinthus ; Harr.,* Sill. Journ. 36, 302, 

 Chwrocnmpn ; Wlk., C. B. M. Lep. Het. viii, 182, Darapsa; Clem.,* Journ. 

 Ac. N. Sci. Phil, iv, 1859, 147, Darapsa; Morr.,* Syn. 1862, 168, Darapsa; 

 Grt., Pr. E. S. Ph. v, 81, Otus; Grt., Buff. Bull, i, 22, Darapsa; Beth., Can. Ent. 

 i, 10, Otus; Hulst,® Bkln. Bull, ii, 35; Bd.,* Sp. Gen. Lep. Het. i, 210, 

 Everyx; Grt., Buflf. Bull, iii, 222, Everyx; Butl., Tr. Zool. Soc. Lond. ix, 545, 

 Otus; Edw.,* Pap. iii, 126, Everyx; Fernald,* Sphing. 64, Everyx; Grt., 

 Hawk Moths 30, Everyx. 



clorinda Martyn, Psyche, pi. 25, figs. 66-67, 1797, Sphinx; Butl., Tr. Zool. 



Soc. Loud, ix, 545, pr. syn. 

 azalese Sm. & Abb.,* Ins. Ga. i, 53, pi. 27, Sphinx ; Harr., Sill. Journ. 36, 302, 



pr. syn. 



