CELLEPORIDA. 193 
L. hyalina, Busk, 2c, p. 84; Johnston, Lc. p. 301. Cells sub- 
cylindrical, elongated or compressed and raised in front, sub-erect, the 
wall thin, transparent, and smooth; mouth circular, frequently with a 
contracted often sub-tubular sinus below, the upper or posterior margin 
much raised, sharp ; ovicell globular, erect, free, punctured. 
Britain. California. Greenland. Cape of Good Hope. Falkland 
Islands, but not New Zealand. 
Var. D.—A sinus on the lower lip, and one or two low tubercles in 
the centre of the cell below one another. 
Lyall Bay. 
L. grandis, Hutton, C.AM.,, p. 98. Cells large (.04 inch), ovate, 
ventricose ; surface shining, sub-granular, often with one or two longi- 
tudinal wrinkles, and with distant pores; mouth simple, slightly 
thickened, sub-orbicular, with the lower lip flattened ; ovicell (?). 
Pale brown. 
Common on dead shells. 
L. vellicata, Hutton, C.M.M., p. 98. Cells immersed, areolate ; 
mouth higher than broad, rounded at the top and contracted in the 
middle, the lower lip arched slightly upwards, and raised ;_ ovicell glo- 
bose, areolate. 
FAMILY-- CELLEPORIDZ. 
Zoarium composed of cells more or less vertical to its axis or plane, 
heaped together, or irregularly overlying each other. 
Genus, CELLEPORA—Fabricius. 
Zoarium calcareous, rigid, adnate, or erect ; composed of urceolate, 
sub-erect, contiguous cells heaped together irregularly, or arranged quin- 
cuncially ; an ascending rostrum on one or both sides of the mouth, 
furnished with an avicularium. 
C. pumicosa, Ziznmneus; Busk, Lc. p. 86; Johnston, p. 295. 
Glomerous ; cells heaped, ovate or pyriform ; mouth orbicula ; rostrum 
large, pointed ; avicularium on the internal aspect, oval; ovicell small, 
decumbent. 
Lyall Bay. Britain. California. Bass Straits. 
Forming small white balls on Sertularta, &c. 
C. bispinata, Busk, Zc, p. 87. Cells ovate, elongated, surface 
granular ; mouth orbicula ; rostrum anterior, with a very minute avicu- 
larium on one side; two long oral spines on the opposite margin ; 
brown. 
Tasmania. 
C. mamillata, Busk, Zc, p. 87. Cells ovate, ventricose, im- 
mersed, forming an incrusting polyzarium, the surface of which is 
studded with mamillary projections ; mouth orbicular ; rostrum large, 
