BRYOZOA FROM FRANZ-JOSEF LAND. 51 
into a bundle. I find 18 tentacles, while Van Beneden and 
Farre speak of 10, Sars 12, Dalyell 12-14, and Vigelius 12. 
Loc. This is a northern form, ubiquitous in the Arctic, and 
occurring off the British Isles and the coast of France. 
Jackson-Harmsworth Exp.: Giinther Sound, 10 fath.; off 
Cape Gertrude, 30 fath.; nr. Wilczek Land, 127 fath.; lat. 
77° 55’ N., long. 53° 20' E., 180 fath.; off Cape Mary Harms- 
worth, 53-93 fath., and 50 miles N.W. Cape Mary Harmsworth, 
234 fath.; off glacier between Cape Flora and Cape Gertrude, 
30 fath.; Cape Flora off West Bay, 8 fath. 
2. BREDTIA FRIGIDA, sp. nov. (PI. 7. figs. 1-3.) 
There are two species of Brettia collected by the Expedition, 
and this one may be what Smitt figured, pl. xviii. fig. 27, and 
which is referred to on page 292, Gifvers. Vetensk.-Ak. Foérhandl. 
1867, under Bugula quadridentata. In the explanation of 
the plates it is called an’Hueratea-growth of B. quadridentata 
from Spitzbergen, 20 fathoms, but the growth is different from 
that of Bugula. 
The zoarium grows to about three-quarters of an inch high. 
The zoccia are unilateral, growing from the dorsal surface, 
with one distal or central rosette-plate aud two lateral (fig. 3). 
The fresh branches arise at intervals of one, two, or three zoccia ; 
and the two new zoecia do not spread out much, but at first are 
usually nearly parallel, the one growing from slightly lower 
down than the other. The area is surrounded by a raised border, 
and occupies more than half of the length of the zowcium. 
Sometimes a very minute spine can be seen at the oral end on 
one side, but more frequently no trace is visible. The radicle 
tubes grow from the distal end. There are 22 tentacles. 
The area is quite similar to that of Bugula, but in most Bugule 
there is a row of distal rosette-plates, though B. Murrayana, 
Johnst., has connections like those of Brettia frigida. This latter 
resembles Maplestonia simplex, MacG., in some particulars, but 
there are no annulated joints. In Breftia, as first defined, there 
are marginal spines; but Busk, in the ‘Challenger’ Report, 
describes from Station 196 (North of Australia) B. australs, B., 
without any spines. The B. cornigera, Busk, is similar in 
shape to the present form, but has 4 submarginal spines, 
Busk undoubtedly is incorrect when he says ‘‘ springing from a 
common stem of radicle tubes,” for ia the Bryozoa the radicle 
tubes always grow from the mature zowcia. Ovicells are unknown 
Ay 
