_Upper Side._ Antennæ ash-coloured. Head, thorax, abdomen, and anterior wings dark olive; the extremities of the latter ending in a point, where is situated a cream-coloured spot, close to the anterior edges, whose extremity runs to the tips; a patch of a dark cream colour is also placed on the external edges, joining to the lower corners. Posterior wings, next the body, dark cream-coloured; below this is a black bar, and another at the external edges, with a dark cream bar between them. The abdominal corners terminate in a point, which is of a fine white silvery hue. _Under Side._ Breast, abdomen, legs, and wings pale olive brown, with three faint indistinct lines crossing them from the anterior to the abdominal edges. The anterior wings having a faint whitish streak placed at the tips. SMERINTHUS ASTYLUS. Plate XXVI. fig. 2. ORDER: Lepidoptera. SECTION: Crepuscularia. FAMILY: Sphingidæ, _Leach_. GENUS. SMERINTHUS, _Latr._ Laothoë, _Fabr._ (Syst. Gloss.) Sphinx, _Linn._ SMERINTHUS ASTYLUS. Alis subangulatis cinnamoneo-roseis, anticarum apice strigisque subapicalibus fuscis, posticarum ocello coerulescenti. (Expans. Alar. 2 unc. 10 lin.) SYN. Sphinx Astylus, _Drury_, _App. vol._ 2. HABITAT: New York. {49}_Upper Side._ Antennæ reddish. Thorax and abdomen reddish cinnamon; having a dark line running from the head along the back to the tail. Anterior wings reddish cinnamon; having a dark apical margin, and a paler streak running circularly from the tips to the lower corners; where, at each of those places, is a yellowish indistinct mark. Posterior wings reddish cinnamon, paler at the base; near the abdominal corners is a round black spot, with an indistinct centre. _Under Side._ Breast, thighs, and abdomen cinnamon. Legs black. Wings nearly coloured as on the upper side; the pale streaks and yellow marks, at the tips and lower corners, being more distinct and plain on this side; the black spots on the posterior wings being wanting. Drury considered it as a distinct species from that in the foregoing plate. SPHINX HYLÆUS. Plate XXVI. fig. 3. ORDER: Lepidoptera. SECTION: Crepuscularia. FAMILY: Sphingidæ. GENUS. SPHINX, _Auct._ SPHINX HYLÆUS. Alis anticis fuscis margine interno apiceque variegatis; posticis nigris maculâ basali fasciâque mediâ transversâ cinereis. (Expans. Alar. 2 unc. 6 lin.) SYN. Sphinx Hylæus, _Drury_, _App. vol._ 2. _Cramer Ins. pl._ 107. _fig._ C? _Fabr. Ent. Syst._ III. 1. 373. _No._ 53. _Gmel. Linn. S. N._ 2383. 81. Sphinx Prini, _Abbott & Smith Ins. Georg. tab._ 35. HABITAT: New York.