NORTH AMERICAN LEPIDOPTERA. 203 



This species is not rare. The genitalia of the male are rather dis- 

 tinctive. The supra-anal plate has been already described ; the side 

 pieces are oblong, with the tip obliquely rounded, the clasper short, 

 broad, concave, the tip oblique, straight, the margin serrate as is also 

 the outer portion of the superior margin. 



The life history of tlie species was first written in a general way by 

 Harris, and since his time the species and its abnormal larva have 

 been very generally referred to in accounts of the family. 



C uii(IiilO!>ta Wlk., C. B. M. Lep. Het. viii. 231, Daremma; Clem., Journ. Ac. 

 N. Sci. Phil. iv. 186, Daremma ; Morr., Syn. 1862, 214, Daremma; Lint.,® Ent. 

 Cont. ii. 128, Daremma: Andrews,* Psyche ii. 73; Hulst.,* Bkln. Bull. ii. 35; 

 Butl., Tr. Zool. Soc. Lond. ix. 611, Daremma; Maassen, Stett. Ent. Zeit. 1880, 

 V. 41, p. 65, an sp. dist. brontes Dru. ? Fernald,* Sphing. 27, Daremma; Hol- 

 land,* Can. Ent. xviii. 102 ; Grote, Hawk Moths 38, Daremma. 



brontes j Bd., Sp. Geu. Lcp. Het. pi. 15, fi}j. 6; id. i. 116, Sjjhinx ; Grt., Pr. 

 E. S. Phil. V. 39=: repentinus ; G. & R., Tr. A. E. S. ii. 76, pr. syn. 



repentinus Clem., Journ. Ac. N. Sci. Phil. iv. 1859, 180, Ceratomia ; Morris, 

 Syn. 1862, 206, Ceratomia; Grt., Pr. Ent. Soc. Phil. v. 39, Ceratomia; id. 72, 

 Sphinx; G. & R.. Pr. E. S. Phil. v. 164, 189, Daremma; Tr. A. E. Soc. ii. 76, 

 pr. syn.; Beth., Can. Ent. i. 17. 



Head and palpi brownish gray, the latter being darker on the middle joint, 

 and the head darker above, and lighter on the sides. The thorax is gray, with 

 two black lines edged with yellowish, crossing the prothorax. These lines meet 

 two similar ones on each side, which run backwards, one on each side of the 

 patagife and meeting behind where the patagise are tipped with white. There is 

 also a curved black line preceded by white and followed by yellowish across the 

 hinder part of the thorax. The abdomen is gray, with a dark brown dorsal line, 

 a broad, broken, subdorsal line, and a narrower lateral brown line ; the edges of 

 the segments paler. The whole under side is gray, with the breast of a pale, 

 cofiFee brown color. Primaries gray, mixed with yellowish scales, and crossed by 

 four pairs of wavy or angulated dark brown lines, which start from the costa at 

 unequal distances apart and divide it into five very unequal parts. The pair 

 nearest to base of the costa runs obliquely as far as the cell, giving off one tooth, 

 then it takes a somewhat wavy course to the hinder margin nearly at right an- 

 gles with it; often it is obsolete below the cell or only marked as a shade. The 

 second pair crosses the wing within the discal spot, curving outwardly to the 

 cell, then inwardly more gently to the inner margin ; the lines are feebly toothed 

 at about the middle, and sometimes rather indefinite below the cell. The third 

 pair starts at right angles with the costa, and curving around the end of the cell 

 ends near the middle of the hind margin. The inner of these two lines is 

 slightly angulated, while the outer one gives off quite long and sharp teeth, and 

 the space between them is filled in somewhat with ochre yellow scales. Between 

 this and the outer pair of lines the space is filled in somewhat with whitish. 

 The outer pair of lines starts at right angles with the costa, curves evenly around 

 to vein 2, and then runs with a slight curve to the inner margin. The outer one 



