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base two white, zigzag, transverse strigJE enclosing a black ov.o ; 

 a white central spot, a zigzag black streak beyond the middle, 

 followed at a short distance by two zigzag, transverse, white 

 streaks enclosing a black one. There is a black mark at the 

 tip, and three whitish clouds on the margin. Posterior wings 

 smoky black, a large white spot near the base, and two indis- 

 tinct whitish strigae reaching from the anal angle to the middle 

 of the wing. Cilia of all the wrings spotted with black and white. 

 Abdomen clothed with mixed ferruginous and black scales, in- 

 cisures irregularly white. Exp. alarum two and one half to 

 three inches. 



jS. plebeja ; four specimens, Wilmington, Del. 

 iS. conifeinnan ; only known to me by Abbot's drawings. 

 S. Ello ; specimen from W. Indies. Stephens has described 

 a closely allied species, as S. poeeila. It probably is American ; 

 the country was not known, — being found in an old cabinet, 

 marked pmastri. Now as our collectors in former days were 

 very apt to place foreign species in the room of allied British 

 species, probably this is an American species placed under a 

 wrong name to fill up a gap. 



In Abbot's drawings there are figures of two Sphinges of this 

 group which I do not know. One is brownish and gray on the an- 

 terior wings, with three darker, transverse, zigzag streaks before 

 the middle, and a dark spot with a pale central one on the middle. 

 Between this and the apex are fine transverse streaks, composed 

 of darker spots often united together, between the second and 

 third of which is a whitish cloud, and at the apex is a black 

 streak pointed inwards. The posterior wings are of the same 

 color, with these transverse clouds of a darker color. Cilia 

 spotted with dark brown. Tliorax brown-gray, with three lateral 

 darker lines, and a black spot behind margined anteriorly with 

 white. Abdomen the same as thorax, Avith a central dark line 

 and five darker spots. Larva on the Catalpa. Above black, 

 two- wdiite spots on the back of the first three abdominal 



