206 Remarks on the Sphingidce of Cuba. 



tegulse. Palpi stout, thickly covered with close squamation ; 

 above, these are pale, concolorous with vertex and " collar ;" 

 beneath and on the sides, the scales are of a bright, rosy-brown 

 hue. Beneath, the thoracic parts are clothed with rather long, 

 bright, rosy-brown scales. Legs, lead-color ; -darker, somewhat 

 brownish, on the femora. Abdomen above, concolorous with 

 primaries; basal segment covered with dark vinous-brown 

 scales, like those on the tegulse, as is also the anal segment. 

 Beneath, of the same rosy-brown hue of the under thoracic 

 parts, though perhaps a little paler. Expanse (female) 4.70 

 inch. Length of body 2.00 inch. 



This fine species is more nearly allied to A. gannascus, Stoll 

 sp., than to A. strigiliSj in the shape of the primaries, but these 

 are more falcate, the internal margin more sinuate than in 

 either of the hitherto described species of Ambulyx from Brazil. 

 The prominent ocelloid spots on the upper surface of the second- 

 aries, offer a specific character which will quickly distinguish 

 the present species from its congeners, and present a remarkable 

 evidence of the intimate relation which the present genus sus- 

 tains to Smerinthus, while the larva of Ambulyx is stated by 

 Prof. Burmeister to approach that of the latter genus in struc- 

 ture. In the borrowed ornamentation which this species takes 

 from Smerinthus, I see a fresh evidence that the position 

 assigned to the genus by myself in a. paper before alluded to 

 here, and by Mr. Coleman T. Kobinson and myself in a recently 

 prepared catalogue of North American Sphingidee, is approx- 

 imately more correct than that allotted to the genus by either 

 Mr. Walker or D. Clemens. I regard it as intimately asso- 

 ciated with Philampelus, and as allying the tribe Chcerocampini 

 with the Smerinthini. 



Ambulyx sexoculata is before me in two female specimens, of 

 which one is in perfect condition, the second, faded by the pro- 

 cesses of exposure or etiolation, to which the beautiful species 

 of this genus are very susceptible, both agreeing in the main 

 points presented by the above description. Since the Asiatic 



