_Under Side._ Breast and abdomen very pale clay colour. Anterior wings at the base pale clay-coloured, towards the middle darker; from thence to the tips prettily clouded with orange and clay-coloured marks, divided by dark lines, and many small dark brown spots. Posterior wings along the interior margin clay-coloured, and along the extreme part of the anterior edges the same; the remainder of the wings dull orange, faintly shaded and spotted with brown marks and dots. {52}ZYGÆNA? THETIS. Plate XXVI. fig. 4. ORDER: Lepidoptera. SECTION: Crepuscularia? FAMILY: Zygænidæ, _Leach_. GENUS. ZYGÆNA? _Fabr._ Anthrocera, _Scop._ Sphinx, _Drury_. ZYGÆNA? THETIS. Coerulea, thorace anticè rubro punctato, alis nigris, anticis apice, posticis disco, hyalinis. (Expans. Alar. 1 unc. 6 lin.) SYN. Sphinx Thetis, _Linn. Mantiss_. 1. 539. Zygæna Thetis, _Fabr. Ent. Syst._ III. 1. 391. _No._ 17. _Gmel. Linn. S. N._ 2393. 115. (Sphinx T.) HABITAT: Jamaica. _Upper Side._ Antennæ black. Head and thorax black. On the neck are two small scarlet spots just above the eyes, and one on each side below them. Abdomen silvery shining blue, having a triangular black mark at the base. Anterior wings dirty black, immaculate; tips whitish. Posterior wings dirty black, with a white discoidal transparent cloud. _Under Side._ Breast and sides dirty black. Abdomen white; its sides and tip dirty black. Wings of the same colour as on the upper side. MACROGLOSSA ZONATA. Plate XXVI. fig. 5. ORDER: Lepidoptera. SECTION: Crepuscularia. FAMILY: Sesiidæ, _Steph._ GENUS. MACROGLOSSA, _Ochs._ Macroglossum, _Scop._ Sphinx, _Fabr. Drury_. MACROGLOSSA ZONATA. Alis nigricantibus, anticis punctis tribus subapicalibus, abdominisque fasciâ albis. (Expans. Alar. 2 unc. 3 lin.) SYN. Sphinx Zonata, _Drury, App. vol._ 2. HABITAT: St. Christopher's. _Upper Side._ Antennæ dark brown, hooked at the extremities; the under sides being paler. Thorax and abdomen dark greyish brown; the extremity of the latter broad and hairy, with a white transverse central fascia; between which and the extremity are three small lateral white spots. Anterior wings very dark brown, with three transparent minute spots beyond the middle; above which, near the anterior margin, is a single black one. Posterior wings dark brown, immaculate. _Under Side._ The middle of the abdomen at the base ash-coloured, extending about half way, narrowing gradually; the middle of each of the segments being the same. Posterior wings coloured as on the upper side; the posterior, along the interior margin to the shoulders, being ash-coloured. PLATE XXVII. [Illustration] SPHINX ALOPE. Plate XXVII. fig. 1. ORDER: Lepidoptera. SECTION: Crepuscularia. FAMILY: Sphingidæ, _Leach_. GENUS. SPHINX, _Auct._