_Under Side._ The colours are more faint and dirty than those on the upper. Anterior femora red, with two black spots thereon, close to the head. Tarsi black and cream-coloured. The caterpillar of this insect is brown, with five pale longitudinal lines, and with long hairs arising from fulvous tubercles. It feeds, according to Abbot, upon plantain, corn, peas, and many other plants. A specimen observed by this author was hatched on the 23d of July, spun up on the 28th of August, and the moth appeared on the 9th of September. It is said occasionally to make great devastation among Indian corn. Sir J. E. Smith ascertained the specific identity of this insect from Dr. Hunter's Museum, examined by Fabricius, who has neglected to cite Drury's figure. SPILOSOMA CUNEA. Plate XVIII. fig. 4. ORDER: Lepidoptera. SECTION: Nocturna. FAMILY: Arctiidæ. GENUS. SPILOSOMA, _Steph._ Arctia, _Latr._ Eyprepia, _Ochs._ Phalæna (Noctua),_Drury_. SPILOSOMA CUNEA. Alis albis, anticis maculis permultis, posticis duabus nigris, abdomine concolori nigro-maculato. (Expans. Alar. 1 unc. 5 lin.) SYN. Phalæna (Bombyx) Cunea, _Drury, App. v._ 2. Phalæna punctatissima, _Abbot and Smith, Ins. Georg. t._ 70? HABITAT: New York (_Drury_). Georgia and Virginia (_Abbot and Smith_). _Upper Side._ Antennæ pectinated and black. There is no appearance of any tongue. Head white. Back and abdomen ash colour. Anterior wings white, with a great number of spots differently shaped of a sooty black colour. On the external margin are five spots, those nearest the tips being shaped like triangles. Posterior wings white, with a sooty spot on each near the external edge, and a very faint small mark near the exterior angle. _Under Side._ Legs black. Breast and abdomen ash colour. The wings marked as on the upper side. There seems little reason for doubting that this is identical with the Phalæna punctatissima of Abbot and Smith, of which the female is entirely white. The last named species feeds upon the mulberry, persimmon, willow, and wild cherry of America. One observed by Abbot spun up on the 16th of May, and came out on the 1st of June. The whole brood of caterpillars feed together in a web, and will often entirely destroy the leaves of a small tree. The name proposed by Drury evidently alludes to the triangular spots on the margin of the anterior wings, and seems quite as expressive as that employed by Sir J. E. Smith, who seems to have treated Drury's work on several occasions as scarcely deserving of notice. {35}NOCTUA (ACONTIA?) NUNDINA. Plate XVIII. fig. 5. ORDER: Lepidoptera. SECTION: Nocturna. FAMILY: Noctuidæ, _Steph._ GENUS. NOCTUA, _Auct._ (SUBGENUS, Acontia? _Ochsenh. Treit._) Phalæna (Noctua), _Drury_. NOCTUA (ACONTIA?) NUNDINA. Alis anticis pallide cinereis albido variegatis, literâ nigrâ ante apicem notatis. (Expans. Alar. 1 unc. 3 lin.) SYN. Phalæna (Noctua) Nundina, _Drury, App. v._ 2.