“Halichondria latrunculioides, n. sp.
Erect, lobose. Light grey. Soft and spongy internally. Surface corrugated but glabrous; with rounded pore-areas elevated above the rest. Dermal membrane parchment-like, except in the pore-areas, where it is very thin and reduced to a sieve by the numerous pores. Vents singly on conical processes, chiefly at summit of sponge. Dermal skeleton a continuous sheet of spicules laid side by side. Main skeleton loose, irregularly fibrous. Spicules almost straight, fusiform acerates sharp-pointed, size .7 by .022 millim.; also a larger form, with unequal ends, size 1.25 by .03 millim.
Locality. Station 320, off Rio de la Plata, 600 fath.”
(Ridley and Dendy, 1886)
