Iridia Heron-Allen & Earland 1914

Iridia is a genus of foraminifera belonging to the subfamily Tholosininae. It contains four species. The first species, I. diaphana, was discovered in the Querimba archipelago by scientists Edward Heron-Allen and Arthur Earland, who first described the genus in 1914.

Iridia es un género de foraminífero bentónico de la subfamilia Tholosininae, de la familia Saccamminidae, de la superfamilia Saccamminoidea, del suborden Saccamminina​ y del orden Astrorhizida.​​ Su especie tipo es Iridia diaphana. Su rango cronoestratigráfico abarca el Holoceno.

Test attached, a hemispherical or irregular chamber with short tubular to branching projections; wall proteinaceous, consisting of a fibrillar lamina propria, formed by endoplasm, and an outer perilamina produced by the ectoplasm and pseudopodia, may include agglutinated particles; apertures at ends of tubular projections; pseudopodia elongate, bifurcating, and arising from a stomostyle or pseudopodial trunk; during asexual reproduction young embryos become temporarily pelagic and have radiating, nonanastomosing pseudopodia, later the pseudopodia are withdrawn, the embryo attaches to the substrate and forms a test; during sexual reproduction gametes with two laterally attached unequal flagella unite to form a diploid schizont that is morphologically like the gamont. Holocene; Africa: Kerimba Archipelago; Caribbean; Mediterranean. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification)