My friend, the Reverend Dr JOHN BACHMAN, assures me that this bird, which some years ago was rather scarce in South Carolina, is now becoming quite abundant in that state, where, during autumn and winter, it resorts to the rice fields. After feeding a few weeks on the seeds it becomes fat, juicy, and tender. He adds that the farther inland, the more plentifully does it occur, which may be owing to the many steamers that ply on the rivers along the sea coast, where very few are to be seen. They are however followed in their retreats, and shot in great numbers, so that the markets of Charleston are now amply supplied with them. He also informs me that he has known hybrid broods produced by a male of this species and the common domestic duck; and that he had three of these hybrid females, the eggs of all of which were productive. The young birds were larger than either of their parents, but although they laid eggs in the course of the following spring, not one of these proved impregnated. He further states that he procured three nests of the Dusky Duck in the State of New York. The young of this species, in the early part of autumn, afford delicious eating, and, in my estimation, are much superior in this respect to the more celebrated Canvass-back Duck. That the species should not before now have been brought into a state of perfect domestication, only indicates our reluctance unnecessarily to augment the comforts which have been so bountifully accorded by Nature to the inhabitants of our happy country. In our eastern markets the price of these birds is from a dollar to a dollar and fifty cents the pair. They are dearer at New Orleans, but much cheaper in the States of Ohio and Kentucky, where they are still more abundant. Their feathers are elastic, and as valuable as those of any other species. I have represented a pair of these birds procured in the full perfection of their plumage. ANAS OBSCURA, _Lath._ Synops. iii. p. 545.—_Ch. Bonaparte_, Synopsis of Birds of the United States, p. 384. DUSKY DUCK, ANAS OBSCURA, _Wils._ Amer. Ornith. vol. viii. p. 141. pl. 72. fig. 5. DUSKY DUCK, _Nuttall_, Manual, vol. ii. p. 392. Adult Male. Plate CCCII, Fig. 1. Bill about the length of the head, higher than broad at the base, depressed and widened towards the end, rounded at the tip. Upper mandible with the dorsal line sloping and a little concave, the ridge at the base broad and flat, towards the end broadly convex, as are the sides, the edges soft and thin, the marginal lamellæ about forty on each side; the unguis obovate, curved, abrupt at the end. Nasal groove elliptical, sub-basal, filled by the soft membrane of the bill; nostrils sub-basal, placed near the ridge, longitudinal, elliptical, pervious. Lower mandible slightly curved upwards, flattened, with the angle very long, narrow, and rather pointed, the lamellæ about sixty.