atlantidam

pl. [ATLANTA.] L. Ethn .: According to Latham, one of the primary varieties of the human species. The maxillary profile is projecting; the nasal one generally flat; the frontal one retiring; the cranium dolichocephalic, the parietal diameter being generally narrow. Eyes rarely oblique. Skin often jet black, very rarely approaching a pure white. Hair crisp, woolly, rarely straight, still more rarely light-coloured. Languages with an agglutinate, rarely an amalgamate inflection. Distribution, Africa. Influence on the history of the world inconsiderable. II. Zoology : A family of molluscs belonging to the cla Gasteropod a and the order Nucleobranchiata. There is a symmetrical discoidal shell, sometimes closed by an operculum. The gills are contained in a dorsal mantle-cavity. Genera: Atlanta, Bellerophon, .