FIGURE 22 in <strong>New glass sponges (Porifera: Hexactinellida) from deep waters of the central Aleutian Islands, Alaska</strong>

FIGURE 22. Spicules of Acanthascus koltuni n. sp., from the Aleutian Islands (SEM). A. Whole dermal pentactins, stauractin and triactin, and enlarged tangential and proximal ray ends of pentactin. B. Atrial hexactin, whole and enlarged ray end. C. Whole parenchymal diactin with two enlarged ends. D. Two discoctasters, slightly damaged. E. Discoctaster terminal plume and two disc ends. F. Discoctaster centra from dermal (above) and atrial (below) locations. G. Oxyhexactin. H. Hemioxyhexaster. I. Oxyhexactin. J. Basal spines and spurs (arrowheads) on oxyhexaster. K. Basal spines on oxyhexactin.