ENTOMOL o G TO A L CONTRIB UTJONS. 1 ;>3 



having but a single pupil, two other species seem to be based, viz. : 

 Sphinx ocellatns Jamaicensis of Drury, and Smerinthvs Cerisyi of 

 Kirby. 



Supposed varieties. DrinVs Jamaicensis is cited by Clemens as a 

 synonym of *S'. geminatus, although its habitat is given by Drury as 

 " Jamaica." Grote and Robinson include it in their catalogue of 

 North American Sphingidffi, as a distinct species, * remarking of it 

 " it seems to us, judging from Drury's figure and description, quite 

 distinct from the northern species from the Atlantic district."t 



A careful comparison of Drury 'B figure with our variety, leaves 

 scarcely a doubt of their identity. In the shape of the wings they 

 correspond closely, the principal difference being in the less rounded 

 anterior angle of the secondaries of the figure, which difference, 

 however, is less than that presented in the apices of the primaries of 1 

 the figure, showing the representation to be not strictly reliable. It 

 is probably accidental, that in the markings of the primaries, the 

 figure conforms more closely to our variety, in the near approach 

 just below the first median nervule of the two bands crossing the 

 middle of the wing, than it does to any other specimen of 8. geminatus 

 which we have seen. The secondaries of the two correspond in their 

 general color, margins, central red shade, and black spot with its hook 

 like process running from it to the anal angle, quite as well as could 

 be expected, from the indifferent execution of the figure : in the 

 location of the pupil on the black spot, a strict agreement between 

 the two, is hardly possible, for while in our variety, the suboval 

 pupil occupies the superior half of the spot, in the figure the right 

 hand oval pupil is placed centrally on the spot, and the round left 

 hand one occupies the inferior portion. The description is faithful 

 to our variety in every particular. 



Additional evidence of Drury's Jamaicensis being a simple variety 

 of S. geminatus, and probably erroneously assigned to Jamaica, may be 



* Proc. Ent. Soc. Ph., 1865, vol. v., p. 160. 



t Loc. cit., p. 185. 



% Upper side. Antennae pectinated and brown. Head and thorax eoft dun-colored, but dark browu 

 above. Abdomen dun. Anterior wings delicate fine grayish, light brown next the shoulders and 

 tips ; the remaining parts being clouded with dark olive brown colors. Posterior wings red in the 

 middle, but along the external edges dun-colored ; having a large black spot placed near the 

 abdominal corners, the middle of which is blue, and imperfectly resembling an eye. All the wings 

 are angulated. 



Under side. Breast and abdomen dun. Anterior wings red in the middle, but along the anterior 

 edges ash-colored, which runs to the tips where it forms a crescent, the inner part being dark olive 

 brown ; the external edges are olive brown, but lighter than the crescent. Posterior wings clouded 

 with olive brown and ash-color ; having a double ash-colored bar crossing them, which rises at the 

 anterior edges of the anterior wings, aud running circularly, ends at the abdominal edges of the 

 posterior. Wett 10.- Drury's llhit. E*t>t. Ent., 1837, v. ii., p. 47. 



