Euspongia

As to color, Dr. Ledenfeld remarked that some of the Australian sponges are of exceptionally brilliant hues, while others range from the black of the common sponge _ (Euspongia officinalis) _ to a pure white.

Scientific American Supplement, No. 601, July 9, 1887 Various

All these muscles are composed of spindle shaped cells, which are capable of spasmodic motion, but recently in an Australian sponge, the _Euspongia canalicula_, the lecturer said he had observed muscles approaching very nearly in character those of the human frame.

Scientific American Supplement, No. 601, July 9, 1887 Various