256 THE ANTARCTIC MANUAL. 
Magellan Straits, 25-90 fathoms. (ix.) Magasella flecwosa, King, 
off Patagonia and in Magellan Straits, 5-15 fathoms. (x.) Platydia 
anomiotdes, Scacchi, off Marion and Prince Edward Islands, 40-600 
fathoms. (xi.) Rhynchonella nigricans, Sow., south of Kerguelen 
Island, 15-150 fathoms. 
POLYZOA. 
CHEILOSTOMATA.—The following Cheilostomatous Polyzoa were 
taken from depths of over 1500 fathoms in our region; and the 
sounding next in depth in the Antarctic was about 200 fathoms :— 
(i.) Bicellaria infundibulata, Busk, taken at stations 147 and 156, 
belonging to the family Brcertaruox, (ii.) Bugula bicornis, Busk, 
from station 157, belonging to the same family. (iil.) Bugula reti- 
culata, Busk, taken at station 147, and, outside the area, at stations 
299 and 303. (iv.) Salicornaria (Cellaria) magnifica, Busk, taken 
at station 157, and, outside the area, at stations 13, 122 and 323, 
belonging to the family Sazrcorwanmps, or Crttaripa, (v.) Fareimi- 
naria magna, Busk, taken in the southernmost station, 153, and 
belonging to the family Farcmuwarupm, (vi.) Foveolaria orbicularis, 
Busk, taken at station 147, belonging to the family Memusrawrpormps, 
In this district very many species of Cheilostomata were dredged at 
a depth of less than 200 fathoms. (vii.) Onchopora sinclairit, Busk, 
of the family Ovcxororm.s, was taken at stations 149p, 150 and 157 
(at the last-named station in a much damaged condition), from a 
depth of 1950 fathoms. 
CycLostomMaTa.—But one species of Cyclostomatous Polyzoa 
occurred over 150 fathoms in the Antarctic regions. This was (vil.) 
Idmonea martonensis, Busk, taken at stations 147,151 and, outside 
the area, at station 320; it belongs to the family T'vevrporma, 
No CTrenostomaTa or ENTOPROCTA were found in this region. 
CRUSTACEA. 
Order J.—OsTRACODA. 
Conditions at the extreme depths of ocean are unfavourable to 
the existence of Ostracods, and, as a rule, the “red-clay” and Gzozi- 
cxriva 00ze of the bottom of the deep sea shows no trace of these 
minute Crustaceans. Yet they are not entirely absent, and some of 
them reach a great size. Professor Brady gives a list of fifty-two 
species, taken in twenty-nine dredgings, at a depth of over 500 
fathoms, and of nineteen species, taken in thirteen dredgings, at a 
