204 Remarks on the Sphingidce of Cuba. 



Ambulyx, Boisduval. 



Ambulyx sexoculata, no v. sp. 



Size large. Anterior wings, sub-falcate : costa, straight, 

 rounded at the apices ; external margin sinuate, a single exca- 

 vation at the apical interspace as in Ambulyx gannascus / 

 internal margin very sinuate, S-shaped ; post-apical nervule 

 produced, at its extremity, beyond the apex. Posterior wings 

 slightly excavate between the nervules ; a prominent excava- 

 tion in the interspace before anal angle, Primaries, dark 

 brownish, paler towards the base and along costa, the color 

 deepening along external margin. At extreme base, a small, 

 very dark, vinous-brown spot. Beyond, a very broad, pro- 

 minent, transverse, almost erect band of the same hue, resting 

 on internal margin and extending upwards to median nervure, 

 ending abruptly and somewhat roundedly. On the side next 

 the base of the wing, the margin of this block of dark-colored 

 scales, is very nearly straight ; on the outer side, a single rounded 

 projection takes place at about the sub-median nervure. 

 Obliquely placed with regard to this sub-basal demi-band and 

 above it, is a spot of the same hue, situate at extreme base of 

 the discal cell. An undulate, sub-obsolete, darker shade line, 

 runs from costa to internal margin, crossing the discal cell at 

 about its centre. A dark, ill-defined, obscure spot, on the discal 

 cross-vein. Beyond the disc, three similar darker transverse 

 lines are continued from costa to internal margin ; the outer of 

 these is margined with pale scales and very prominent and zig- 

 zag on internal margin before the angle. A dark, rounded 

 spot in medio-inferior interspace, contiguous to, and outside of 

 the first of the three terminal transverse lines. All these lines 

 are more or less obscured by the ground color of the wing. A 

 large, dark, sub-apical, costal patch, extending downwards to 

 post-apical nervule and preceded, on costa, by a few whitish 

 scales. Sub-terminally, and irregularly at the middle, the wing 



