416 Annah Entomological Society of America [Vol. XI, 



usually elevated, often with a few radiating lines; cremaster 2.5 mm., in 

 length, very rugose, narrowing to a bifid spine at tip. Length of pupa 

 45-52 mm. ; greatest width 13 mm. 



This species is more variable than amyntor. Although the abdomen 

 is usually finely punctate, certain individuals show very coarse punc- 

 tures like amyntor. As far as my experience goes the scars on the 

 mesothorax may be relied on to separate the two species, if no other 

 characters were available. 



Ceratomia amyntor Hbn. 



Body usually dull; the head and thorax with rather deep indeter- 

 minate striations and finer striations on the appendages which some- 

 times appear polished; abdomen with medium or coarse punctures on 

 the first seven segments, these sometimes confluent and interrupted by 

 transverse striations, the remaining segments always coarsely punctate, 

 annulets usually distinct on the dorsum of the segments; maxilLx 

 slightly swollen and striate at proximal end, sometimes for the whole 

 length, and reaching the caudal margin of the wings, though some- 

 times partially overlaid by the wings at the distal end; mesothorax 

 with a scar of a larval horn prominent on each side the meson about 

 two-fifths of the distance from the cephalic to the caudal margin, each 

 represented by a more or less interrupted series of concentric circles, 

 another pair of scars usually visible near the cephalic margin and a little 

 farther apart than the former, usually elevated; metathorax with a 

 slightly elevated crescentic ridge on each side the meson only distinct in 

 fresh specimens; scar of caudal horn very seldom elevated, smooth 

 and polished; cremaster 3 mm. long, very rugose and slightly bifid at 

 tip. Length of pupa 45-50 mm., greatest width 13 mm. 



Genus Daremma Grt. 



The pupae of this genus are normally very much smaller and 

 more slender than those of Ceratomia and the entire surface 

 appears polished. The segments are not so deeply punctate 

 and the punctures are smaller and less numerous on the caudal 

 half. There are few, if any, of the transverse striations which 

 were present in the species of Ceratomia. There is no maxillary 

 loop and the maxillae do not reach the caudal margin of the 

 wings. The antenna are indistinctly transversely striate and 

 have a single row of minute tubercles along the middle line. 

 The prothoracic legs usually show slight swellings and occa- 

 sionally a very narrow portion of the femur is exposed on one 

 side. There is but one deep spiracular furrow present, the outer, 

 shallow one present in Ceratomia is lacking here. The cremaster 

 is triangular, narrowed to the tip, which is sometimes slightly 

 bifurcate. 



