Polyzoa of Queen Charlotte Islands. 211 
small incrusting colonies, and was under the impression that 
they represented the mature and perfect form. I now find, 
however, that this is by no means the case. When fully 
erown the zoarium of Lagenipora spinulosa is erect and ra- 
mose (Pl. IX. fig. 4), consisting of a cylindrical stem, which 
divides and subdivides dichotomously, the branches termina- 
ting above in short bifid segments. The zowcva are arranged 
longitudinally in six lines along the stem and branches, those 
in neighbouring lines alternating; the oral (or neck-like) 
portion free and projecting, the lower immersed. 'The surface 
of the cell is covered with very large foramina, which are 
closed in by membrane. Primary orifice elliptical, slightly 
narrowed below. The surface of the owcitwm is smooth, and 
entire behind ; a raised line arches across it towards the front, 
and the portion in advance of this line is covered with minute 
disks closely packed together. 
In its pertect condition this species bears a close resemblance, 
so far as habit and general appearance are concerned, to an 
Entalophora. 
The wall of the cell is built up of tubes placed longitudi- 
nally and closely appressed to one another; this curious 
structure may be best observed in the erect neck-like portion 
of the zocecium. The superficial foramina are probably the 
openings of the tubes. 
The lateral avicularia are supported on a tubular structure, 
which may be traced stretching down the inner wall of the 
oral cylinder (neck) and tapering off finely below. Lagent- 
pora spinulosa would seem to be abundant where it occurs ; 
it must be accounted one of the most interesting forms which 
Dr. Dawson’s dredgings have yielded. 
Family Myriozoide (part.). 
Schizoporella cruenta, Norman. 
This species must be added to the list of North-Pacifie 
forms. ‘The single specimen which occurs is in fine condition, 
and has the oral sinus much more strongly marked than the 
British examples which I have examined. The deep-red 
colour of the zoarium when fresh has given place toa uniform 
black. 
[Nova Zembla, Greenland, Britain, from Shetland to the 
Channel Islands. | 
Schizoporella biaperta, Michelin. 
A specimen has occurred in which the oral avicularia as- 
