446 
Mr. P. W. Bassett-Smith on 
position, sometimes in close contact, projecting slightly, 
circular or compressed, from 2 to 3 millim. wide ; septa from 
20 to 30, nearly sharp edges, laterally strongly echinulate, 
variable in this respect, sometimes showing dissepiments (?) 
or thin synapticula extending between the septa ; calices deep ; 
columella tuberculate or compressed, so as to be partially 
laminate, the septa confluent. 
This form may be merely an abnormal mode of growth of 
a laminate frond which has become curved, so that the mar- 
gins united to form a hollow stem. It does not seem to 
correspond to any described species. 
Macclesfield Bank, 20^ fath. 
Genus Cycloseris, Ed. & H. 
Cycloseris cyclolites , Lam., sp. 
1816. Fungi a cyclolites, Lam. Hist, des Anim. sans Yertebr. t.ii. p. 226 f 
2nd ed. p. 371. 
1860. Cycloseris cyclolites, Ed. & II. Hist. Nat. des Corail. t. iii. p. 50, 
pi. D 12. fig. 3. 
A single dead specimen 40 millim. in diameter and 10 
millim. in height is perhaps referable to this species, though 
it is not more than half the height of typical examples of the 
species and the central fossette is more open. 
From the Tizard Bank, depth 28 fath. 
Cycloseris tennis , Dana, sp. 
1848. Fungia tenuis , Dana, Expl. Exp. Zooph. p. 290, pi. xviii. fig. 1. 
1860. Cycloseris liexagonalis , Ed. & H. Hist. Nat. des Corail. t. iii. 
p. 51. 
1881. Cycloseris tenuis y Moseley, 1 Challenger’ Rep. yol. ii. p. 191, 
pi. x. fig. 6 a. 
There are several examples of this form, which range from 
6 to 21 millim. in diameter and from 1*5 to 5 millim. in 
height, 
young 
growing on a sponge, and one dead specimen. 
From the Tizard Bank, depth 27 to 28 fath. 
Cycloseris sinensis , Ed. & H. 
1851. Cycloseris sinensis , Ed. & H. Ann. des Sc. Nat. 3* s6r. t. xv. p. 112. 
One specimen, free, 26 millim. wide by 3’3 millim. high, 
and an apparently young individual, 6 millim. wdde, attached 
by a short stem. 
From the Macclesfield Bank, depth 26 fath. 
The specimens are free with the exception of a 
individual, which has a short cylindrical stem and is 
