REPORT ON THE POLYZOA. 
163 
(a) Bilaminar (escharan). 
(1) Schizoporella furcata, n. sp. (PL XXL fig. 5). 
Character. — Zoarium (small), furcate ; branches subcylinclrical, tapering (0 //- 05 to 
•055 wide). Zooecia immersed, oblong, separated by thin septa. Surface punctate. 
Mouth semicircular, with a wide shallow sinus in the lower lip. Sometimes, but 
rarely, a very small avicularium on one shoulder. Ocecia lofty, convex, and prominent 
in front, but deeply imbedded in the superjacent zocecium ; surface finely granular ; with 
an arched line on either side, the two converging so as to form a slight keel on the 
front. 
Habitat. — Off Honoruru, Sandwich Islands, 20 to 40 fathoms. 
There is sometimes a small membranous web filling up the angles of the branches of 
the zoarium. 
(b) Unilaminar (hemescharan). 
(2) Schizoporella nivea , n. sp. (PI. XVII. fig. 1). 
Character. — Zoarium expanded, foliaceous, free, of a milk-white colour. Zooecia 
quincuncial, but serial ; quadrangular, slightly convex in front and separated by fine 
septal ridges ; surface uniformly punctured. Orifice suborbicular, slightly sinuated below. 
A small rounded papillary elevation at each upper angle, not apparently avicularian, but 
closed. Ocecium globose, large, punctured uniformly with the wall of the zooecium. The 
dorsal surface of the zooecia entire and smooth. 
Zooecia 0"'025 ; orifice 0"'0075 wide. 
Habitat. — Station 142, lat. 35° 4 A S., long. 18° 37' E., 150 fathoms, green sand. 
(3) Schizoporella longispinata , n. sp. (PI. XVII. fig. 2). 
Character. — Zoarium small, partially attached by calcareous matter but mostly 
free. Zooecia quincuncial, completely immersed, but convex in front, broadly ovate ; 
at the growing margin subventricose. Surface irregularly verrucose. Orifice orbi- 
cular, emarginate, unchanging. Peristome rather thick, with six very long, acute, 
usually terete but sometimes compressed, articulated and jointed oral spines ; sometimes 
bifid at the point. An erect, acutely pointed avicularium on one side of the orifice, with 
an acute slender mandible pointing directly upwards. Ooecium globose, smooth and 
polished, with a sinus or notch on each side at the bottom, the anterior border of its 
opening descending so as to completely conceal the opening, and the whole ooecium 
