_Under Side._ Palpi black. Neck white. Breast and sides mazarine. The legs black and white. Abdomen orange, ringed with mazarine. Wings coloured as on the upper side; but next the body of a finer and stronger blue. The white part of the tips is also stronger and more distinct. The margins of all the wings are entire. PLATE VI. [Illustration] BOTYS (DESMIA?) SERICEA. Plate VI. fig. 1. ORDER: Lepidoptera. SECTION: Nocturna. FAMILY: Pyralidæ. GENUS. BOTYS, _Latr._ SUBGENUS: Desmia? _Westw. in Guer. Mag. d'Ent._ BOTYS (DESMIA?) SERICEA. Alis sericeis viridi-margaritaceis, anticarum margine antico luteo. (Expans. Alar. 2 unc. 3 lin.) SYN. Phalæna (Pyralis) Sericea, _Drury_, _App. vol._ 2. HABITAT: Gold Coast of Africa. _Upper Side._ Head light green. Eyes black. Antennæ thread-like, and very long; appearing at the middle as if they had been broken, and had branched out again to their proper length. Thorax and abdomen light green. Tail dark brown. Wings fine light green, almost transparent, and resembling mother of pearl. Anterior edges of the anterior wings pale orange-coloured. {12}_Under Side._ Palpi, neck, breast, abdomen, and legs light green; except the anterior tibiæ, which are pale orange. Tail dark brown. Wings of the same colour as on the upper side, immaculate. Wings entire. The curious structure of the antennæ of this insect (which is, doubtless, peculiar to the males alone) is very similar to that of Desmia maculalis, (Westw. in Mag. Zool.) but the larger size, pearly wings, and different quarters of the globe in which these two species are found, make it doubtful whether the two insects belong strictly to the same subgenus. It is evidently nearly allied to the British genus Margaritia. Mr. Smeathman informed Drury that this is one of the Phalænæ which fly during the day. A little noise or rustling disturbs it, when it takes rapid flights of twenty or thirty yards, hiding itself with great ingenuity, which makes it difficult to catch. SATURNIA CYNTHIA. Plate VI. fig. 2. ORDER: Lepidoptera. SECTION: Nocturna. FAMILY: Bombycidæ, _Steph._ GENUS. SATURNIA, _Schrank._ Attacus, _Germar._ Bombyx p. _Fabr._ SATURNIA CYNTHIA. Alis falcatis luteo-fuscis, fasciâ communi albidâ strigâ basali lunulâque discoidali; anticis ocello parvo apicali. (Expans. Alar. 5 unc. 3 lin.) SYN. Phalæna (Attacus) Cynthia, _Drury_, _App. vol._ 2. _Oliv. Enc. Méth._ 5. 30. 26. HABITAT: China.