Polyzoa of Queen Charlotte Islands. 51 
rather large circular pores, placed side by side. They give 
a somewhat peculiar appearance to the cell, but do not seem to 
have any special significance. Frequently too there is a 
small raised oval avicularium on the front of the cell, besides 
the oral avicularium, which I have not noticed on Australian 
specimens. ‘The cell-wall is smooth and entire ; the ocecium 
is traversed by delicate radiating lines. 
Extremely common, on shells &c. 
[Victoria (MacGillivray) ; Bass’s Straits (Capt. Cawne 
Warren).| 
The species described by Mr. Ridley from the Straits of 
Magellan (Proc. Zool. Soc. Jan. 4, 1881) as Schi'zoporella 
marsupium, and identified by him with MacGillivray’s Le- 
pralia marsupium, is, I have no doubt, the Hscharina simplex 
of D’Orbigny (‘ Voyage dans Amérique Mérid.’), obtained 
from “les Iles Malouines.” MacGillivray, who has found this 
species in Victoria, has named it Schizoporella Ridleyi (Proc. 
Roy. Soc. Victoria, Oct. 12, 1882). 
We have no alternative, however, but to revert to the earlier 
designation, and it must stand as Schizoporella simplex, 
D’Orb. 
Porella major, n. sp. (PI. IV. fig. 5.) 
Zoecia ovate or (sometimes) hexagonal, somewhat elongate, 
quincuncial, rather depressed, sutures shallow, often with a 
line of punctures round the margin; surface smooth or slightly 
roughened, glossy ; orifice arched above, lower margin curved 
inwards, so as almost to appear dentate ; peristome thin, un- 
armed, elevated (in the adult cell), especially above, immedi- 
ately below the orifice a narrow avicularian swelling, stretching 
across the front of the cell and bearing in the centre a small 
oval avicularium, mandible directed downwards. Oactum 
rounded, moderately prominent, surface minutely roughened, 
the peristome forming a raised rim round the oral arch. 
Zoarium of a very light brownish colour. 
Cumshewa ; Houston-Stewart Channel, common on shells. 
SmirtiA, Hincks. 
Smittia trispinosa, Johnston. 
Houston-Stewart Channel; off Cumshewa; Virago Sound : 
abundant. J 
[Britain, Norway, Arctic regions, St. Lawrence, Mingan 
Islands, Florida, Mazatlan, Cape Horn, Aden, Adriatic, 
East Indies (Dr. Anderson), Bass’s Straits.] 
Several varieties occur. As a rule, the avicularian appen- 
dages are present in great profusion and of unusual size. 
4# 
