NORTH AMERICAN LEPIDOPTERA. 167 



A widely distributed species, and not uneonunoii aiiywliere. It 

 varies very little, except in depth of ground color and conn)arative 

 distinctness of niaculation. The genitalia of the % have the supra- 

 anal plate narrow, the hook long, stout, somewhat triangular, curved 

 and acute at tip, meeting the inferior process, which is shorter, stouter 

 and straight, having an internal acute hook with an outer, less cliiti- 

 uous, broad, upturned fold covering it and forming the api)arent tip. 

 Side piece oblong, parallel, with a rather irregularly rounded tip ; 

 the clasper is broad, excavated, with the inferior angle produced 

 into a short, acute point. 



The larva has been long known, and is figured and described in 

 most popular works, yet I cannot find any complete life history, nor 

 does the egg seem to have been described. The larva is extremely 

 variable in color. 



P. Carolina Liuu., Mus. L. U. 346, Sphinx: Syst. Nat. ii, 798, Sphinx ; Dm., 

 111. i, .^2, pi. 25, fig. 1, Sphinx ; Browu, Jamaica, 438, pi. 43, fig. 17; Fabr.,* 

 Syst. Ent. 539, Sphinx; Sp. Ins. ii, 144, Sphinx; Mant., Ins. ii, 94, Sjjhinx ; 

 Eut. Syst. iii, 1, 363, Sphinx; A. & S., Ins. Ga. i, 65, pi. 33, Sphinx; Gmel.,* 

 ed. Linn. S. N. 2377, Sphinx; Hiib., Samml. Ex. i, pi. 170, Manduca obscura ; 

 Verz. 140, Phlegethontius ; Steph., 111. Br. Ent. Haust. i, 118, Sphinx; Curtis, 

 Brit. Ent. v. pi. 19r3, Sphinx ; Westw.,* ed. Dru. i, 47, pi. 25, fig. 1, Sphinx; 

 Wood, lud. Eut. p. 246, pi. 53, fig. 22, Sphinx; Harr.,* Sill. Journ. 36, 294, 

 Sjjhinx : Wlk.,* C. B. M. Lep. Het. viii, 216, Sphinx; Clem.,* Journ. Ac. N. 

 Sci. Phil. iv. 1859, 165, Macrosila ; Morris,* Syn. 1862, 189, Macrosila ; Harr., ■■ 

 Inj. Ins. Flint ed. 322, figs. 145-147, Sphinx; H. Sch., Corr. Bl. 1865, p. 59, 

 Sphinx; Grt., Pr. Eut. Soc. Phil. v. 69, Sphinx ; G. & E., Pr. Ent. Soc. Phil. 

 V. 163, Macrosila; Bd.,* Sp. Gen. Lep. Het. i, 70, Sphinx; Edw.,* Pr. Cal. Ac. 

 Sci. vi. 92, Macrosila ; Scud.,* Psyche, ii, 73 ; Butl., Tr. Zuol. Soc. Loud. ix. 

 606, Protoparce ; Grt.. Buff. Bull, iii, 224, Phlegethontius ; Leidy,* Pr. Ac. N. 

 Sci. Phil. 1882, 237; Behr.,* Pap. ii, 3, Macrosila; Gundlanch, Cont. Ent. 

 Cuba, 210, Macrosila; Fernald,* Sphiug. 31, Phlegethontius ; Grote, Hawk 

 Moths 40, Phlegethontius. 



Head, thorax and primaries above, dark brownish gray or fuscous. Palpi a 

 little lighter beneath and iu front. Collar and base of patagi* laterally also 

 paler, the former with an indistinct, darker, transverse line. Thorax anteriorly 

 black marked, and there are some irregular, black spots edged with white poste- 

 riorly ; the metathoracic tufts are black, rarely with a trace of blue scales. Ab- 

 domen with a gray dorsal band, in which is a narrow, more or less complete 

 central black line, the edges of the segments dotted with white ; laterally is a 

 series of five large orange spots, decreasing in size posteriorly and surrounded 

 with black : below these spots is a series of white dots. Beneath a series of me- 

 dian dusky spots variable in uumber and sometimes entirely absent. Primaries 

 with a small white spot at base and a small, irregular, whitish discal spot edged 

 with brown. Four angulated, dusky lines cross the wing inside the discal spot, 

 about equidistant at costa, and so arranged as to give the basal field a long, acute, 



