1g10.! J. RitcHiE: Hydrotds of the Indian Museum. 15 
the other median sarcothece. The specimens are examples of 
Antenella secundaria, not of A. gracilis. 
Locality: Climbing over Sertularella polyzonias var. cornuta, 
from 8 miles west of Interview Island, Andaman Islands; depth 
270—45 fathoms. 
Distribution.—A. secundaria is a widely distributed though 
rather uncommon species, recorded from the Mediterranean Sea 
(Heller, 1868; Mark.-Turner., 1890); from the Atlantic Ocean. 
southwards from the shores of Britain (Hincks, 1868, as Plumularia 
catharina var.), and the Bay of Biscay (Pictet and Bedot, 1900; 
Billard, 1907 (1)) to the Azores (Billard, 1907), Madeira (Jaderholm, 
1903), the north-west coast of Africa, and the Cape Verde Islands 
(Billard, 1907(1) ). Outside the Atlantic area it has been found 
in Indo-Pacific seas, from Natal (Warren, 1908, as A. natalensis), 
Ceylon (Thornely, 1904, as A. gracilis), Andaman Islands (present 
record), the Moluccas (Pictet, 1893), from Bass’ Strait and Williams- 
town in Australia (Busk, 1852, and Bale, 1884, as Plumularia 
campanula var.'), and from Japan (Stechow, 1907 and rgo0Q) 
Aglaophenia septata,’ Ritchie. 
(Piviv.. figs.6, 7.) 
Ripenie J. 1g0o.(2) 9p. 520. 
A single imperfect colony, 65 mm. high, with a straight, fas- 
cicled. unbranched stem, was obtained at a great depth near the 
Andamans. ‘The anterior tube of the fascicle is alone divided into 
internodes, which are separated by faint nodes, are of uniform 
lengths, and bear each a process upon which a hydroclade is set. 
The hydroclades are biserial, lying in two planes which meet 
at an acute angle on the anterior side of the stem. ‘They are alter- 
nate, project from the stem at an angle of 40°—45°, and are about 
8 mm. long (the longest being 11 mm.). The hydroclades are divi- 
ded into regular thecate internodes each of which is partitioned by 
numerous strongly marked septa. Four septa generally spring 
from the posterior wall of the hydrotheca: a small one near the 
base of the supracalycine sarcothecee, two from the middle of the 
hydrotheca, and the fourth from a postero-basal position. In 
addition, three project from the anterior wall of the internode 
proximal to the hydrotheca : of these the distal is very characteris- 
tic for it is tilted upwards, and, as in Lytocarpus annandalei of this 
report, traverses the base of the median sarcotheca, cutting off its 
cavity from that of the internode, but for a hole which allows of the 
passage of the ccenosarc. 
The hydrothecee are rather distant, almost triangular in lat- 
eral aspect, very narrow at their base, and widening greatly towards 
1 The identification of P. campanula var. with the above species is due to 
the researches of Dr. Billard who has examined Busk’s type specimens in the 
British Museum (Billard, 1909). 
2 Septata—referring to the specific characters shown by the number and 
atrangement of the internodal septa. 
