FIGURE 2. Antho ridgwayi n in Inventory of the eastern Bering Sea sponge fauna, geographic range extensions and description of Antho ridgwayi sp. nov.

FIGURE 2. Antho ridgwayi n. sp. A, Holotype. Grid marks are 1 cm. B, Light microscopic section perpendicular to the surface. Ectosome visible as dark band on upper right. Ascending tracts of styles and reticulation of acanthostrongyles visible below, appearing as darker area. C, Close-up view of section perpendicular to surface. Ectosomal veneer with numerous isochelae (upper right) and ascending tracts of styles (below). Reticulation of acanthostrongyles visible at the right. D, Small and large toxa within the ectosomal organic veneer.