ANATIFER. Brug. ANATIFA, Lam. This name, which signifies Duckbearing, has been given to the shells commonly called Barnacles, on account of an absurd notion entertained among the ancients, that they inclose the young of the Barnacle duck, in an embryo state. The beautiful bunch of jointed arms, the ciliæ of which serve the purpose of agitating the water, so as to draw in food by the current, were supposed to be the feathers of the future bird. For a description of these shells, see PENTELASMIS; and fig. 34. ANATINA. Lam. (_That which belongs to a duck._) _Fam._ Myaria, Lam. Pyloridea, Bl.--_Descr._ Thin, transparent, generally equivalve, inequilateral, transverse, marine; hinge with a spoon-shaped process in each valve, containing the cartilage.--_Obs._ Some species included in the genus Anatina of authors, A. striata, for instance, have not the spoon-shaped prominence, but in its place a small, testaceous, moving appendage, connected with the interior of the hinge. These are now separated, and form the genus LYONSIA. The genus Næara, Gray, is composed of Anatina longirostrum, and similar species, which have neither the bony appendage nor the spoon-shaped prominence. Mya is distinguished from Anatina, by the thickness of the shell, and also by having the prominence only in the hinge of one valve. Fig. 69. A. rostrata. The Anatinæ are found in the East Indies and South Sea Islands. ANATINELLA. G. B. Sowerby. (Dimunition of _Anatina_). A genus so named from its resemblance to Anatina, from which it differs in being destitute of the internal appendage, and having no sinus in the palleal impression. One species having been brought from Ceylon, received the name of Anatinella Sibbaldii. Another has lately been found in the Philippine Islands. Fig. 70. ANATOMUS. Montf. Tom. 2, plate 279. A microscopic shell, appearing from the figure to resemble SCISSURELLA. ANAULAX. Brogn. ANCILLARIA, Auct. ANCILLA. Lam. ANCILLARIA, Auct.