REPORT ON CORALS—DEEP-SEA MADREPORARIA. 185 
whether it may not have been actually derived from some other dredging, and have lain 
for some time entangled in the swabs. 
Station 320, off the mouth of the Rio de la Plata. 600 fathoms ? 
Cladocora conferta, nu. sp. (Pl. X. fig. 5, 5a). 
The corallum forms small irregular masses, in which the individuals are closely 
packed together. In the specimens obtained the interstices in the masses are filled in 
with extraneous growths of all kinds and particles derived from the sea bottom, which 
are firmly cemented together. There are six systems and four cycles, three of which are 
complete, the septa of the fourth cycle being small and rudimentary. There is a well- 
marked but rather shallow fossa. The pali are irregularly developed, but paliform lobes 
are usually present on all the septa except those of the fourth cycle; those of the tertiary 
septa are most prominent, and sometimes form a well-marked and complete crown. The 
columella is large, and composed of abundant papille. The whole of the surface of the 
corallum and septa is roughened by abundant fine-pointed granules. 
Height of the largest specimen, 3 mm. Average breadth of the calicles, 4 mm. 
to 5 mm. 
Off Samboangan, Mindanao Island, Philippine Islands. 30 fathoms and 10 fathoms. 
Family Funes. 
Sub-family Lophoserine, Milne-Edwards and Haime. 
Bathyactis, n. gen. 
Corallum free, discoid, not attached or cup-shaped in the young condition, thin and 
fragile ; primary septa free, the others united so as to form six deltoid combinations ; 
upper margins of the septa usually coalescent over the apices of the deltas. Septa deeply 
toothed ; synapticule sometimes abundant, sometimes few, arranged in a series of con- 
centric circles. Columella well developed. 
The very widely-distributed coral named by Count Pourtalés Pungia symmetrica can 
scarcely be considered to fall naturally into the genus Fungia, especially now that its 
larger varieties are known. It is obviously, from its general appearance, nearly related 
to Lophoseris. It differs from Fungia in having its primary septa free, and in having 
a well-developed columella. Its extreme lightness and fragility and the regular deltoid 
arrangement of its septa in combination with the presence of synapticule, are charac- 
teristic of it. 
Iam not sure whether Fungiacyathus fragilis of Professor M. Sars’ will not prove 
1 Professor M. Sars, On Some Remarkable Forms of Animal Life from the Great Depths off the Norwegian Coast, 
p. 58, pl. v. figs. 24-32. Christiania, 1872. 
gS. = 
(ZOOL. CHALL, EXP.—PART vil.—1880.) G 24 
