446 Rev. Canon Norman—A Month on 
known are from the Antarctic, the South Atlantic, or the 
Australian Seas. 
613. Aplidium, sp. 
“ Several small colonies, which cannot be identified with 
any certainty.” 
POLYZOA. 
Having during previous dredgings in Norway paid much 
attention to the Polyzoa, I had a large mass of material, 
examined and unexamined, belonging to this Class from the 
fiords. I did not therefore, on the present occasion, search 
for incrusting species, but gave the time thus saved to other 
things. The few incrusting forms in the following list were 
accidentally noticed, but it will be seen that the arborescent 
Polyzoa are of great interest. 
1. Menipea Jeffreysii, Norman. (Pl. XIX. fig. 1.) 
1868. Menipea Jeffreysit, Norman, ‘Notes on some rare British 
Polyzoa, with Descriptions of new Species,” Quart. Journ. Mier. Sci. 
n. s., vol. viii. p. 218, pl. v. figs. 4-8. 
1880. Menipea Jeffreysi, Hincks, Brit. Marine Polyzoa, p. 42, pl. ix. 
figs. 1, 2. 
Menipea Jeffreysii was described from two very minute 
fragments, each about 2 millim. long, which were picked out 
by the late Mr. C. Peach from shell-sand dredged by Jeffreys 
and myself off Shetland and in the Minch. ‘The description 
of these worn fragments was therefore imperfect, and I will now 
give full details of this very distinct species. 
Zoarium very transparent and glassy, arising from a single 
stem composed of a coil of chitinous tubes, and attached by 
the base usually to a small pebble or fragment of shell, 
dichotomously branching, branches all in one plane. Zocecia 
6 to 9 and sometimes more in each internode, aperture regu- 
larly elliptical, occupying half the length of zocecium ; in 
young cells armed in front with three long spines, the inner- 
most much more slender than the others, but in older zocecia 
this innermost slender spine has generally been broken off at 
the base and is no longer perceptible, while the others remain 
as short, more or less stumpy spines; fornix (operculum) 
attached near the upper end of the inner margin, very large, 
convex, cap-like, and so closely fitted down to the aperture 
that, viewed from above, it appears to be part of the cell, and 
only careful lateral inspection shows the narrow open line 
