FIGURE 2. Acantorna tahoma n in Acantorna-a new genus of Hymedesmiidae (Porifera, Demospongiae Poecilosclerida) from the western Aleutian Islands of Alaska with description of Acantorna tahoma n. sp.

FIGURE 2. Acantorna tahoma n. sp. A, Holotype, front. B, Holotype, back. C, Holotype from top; note oscules located here. D, Spicule tracts of acantornotes ending in surface brushes forming a palisade. Below confused arrangement of all spicule types. E, Close-up view of spicule brushes of acantornotes at the surface (lower right). F, Section through choanosomal canal ligned by microscleres. G, Choanosomal acanthostyles, acantornotes and microscleres. H, Acantornote from upper left to lower right among microscleres. Blunt end of acanthostyle at left. Tip of acanthostyle pointing to acantornote.