168 JOHN B. SMITH. 



outward angle on the cell. Three similar lines cross the wing beyond the cell, 

 giving oft" acute angles on the veins and often fusing together below the discal 

 spot, and forming a more or less evident brown patch. The space following these 

 lines is usually dai'ker, more brownish. Another single, angulate and dentate 

 line crosses the wing rather close to outer margin, becoming more distinct to- 

 wards the inner margin. Still nearer to the outer margin and parallel with it is 

 a white, dentate line, which does not reach the costa. A dark brown or blackish 

 streak extends obliquely inward from the apex, and is edged above with whitish 

 gray. Fringes cut with gray between the veins. Secondaries gray, with a small, 

 smoky brown spot at base, a line extending nearly across the wing outside of 

 this spot, two more slightly dentate across the middle, the space between • them 

 dusky, and another margining the outer gray band, which is broad at the costa 

 and tapers to a point at the anal angle. Beneath, the primaries are of a uniform 

 dark fuscous gray, crossed by two or three parallel lines beyond the cell, and 

 dentate on the veins, while the wing beyond is somewhat clouded. Secondaries 

 of a lighter shade than primaries, crossed by three median lines strongly angu- 

 lated on the veins. A shade band crosses the wing beyond this, and the anal 

 portion is whitish. Expands 3 — 5 inches; 7.5—125 mm. 



Hab. — United States ; Canada ; West Indies. 



This species also varies little, except in size, and comparative dis- 

 tinctness in markings. It is a much more sordid form than the pre- 

 ceding, and this as well as the other previously noted differences will 

 serve to distinguish it. 



The supra-anal plate and hook are very similar to that in the pre- 

 ceding species ; the side piece is broader, tapering rapidly from either 

 side to a blunt tip. The clasper is unique, and resembles nothing 

 more in shape than a mitten with the thumb drawn out to a point 

 and somewhat curved, while the outer edge of the hand is irregu- 

 larly serrate. The structure is unicjue and very different from that 

 of celeus. 



This species, as well as celeus, figured for a time among the British 

 species. Stephens obtained some specimens of the home of which 

 he felt certain, and for a long time the species stuck as a European. 



The larva of this species was known as long since as Fabricius, 

 who gives a short description of it. Since then it has been figured 

 and described times without number, yet, as with celeus, the egg is 

 .still undescribed so far as I can find. 



P. rustica Fabr., Syst. Ent. 540, fiph'mx ; Sp. Ins. ii, 14.5, Sphinx; Mant., Ins. 

 ii, 9,5, Hphinx: Ent. Sy.st. iii, 1. 366, Sphinx; Sulz., Ab. Gesch. Ins. pi. 20, fig. 

 2, Sphinx; Cram., Ex. iv, 21. pi. 301, fig. A, Sphinx; Gmel., ed. Linn. S. N. 

 p. 2385, Sphinx ; A. & S.,* Ins. Ga. i, 67. Sphinx; Hiib., Verz. 140, Cocytius ; 

 Burm.,* Sph. Braz. 18.56, Verz. Naturf. Ges. Halle, 63, Protoparce ; Wlk., C. 

 B. M. Lep. Het. viii, 199, Macrosila ; Clem.,* Journ. Ac. N. Sci. Phil. iv. 1859, 

 163, Macrosila ; Morr.,* Syn. 1862, 187, Macrosila ; H. Sch. Corr. Blatt. 1865, 



