496 
CCELENTERATA. 
prominent verrucas, arranged in vertical lines. Simple tentacles, in several 
rows, submarginal, with compound and much subdivided tentacle-like or- 
gans both outside and inside of them, the latter covering the disk more or 
less completely. A. orientalise sp. n., Verrill, Bonin Islands. 
Dicostoma fungiforme, sp. n., Verrill {ih. p. 70), Port Lloyd, Bonin 
Islands. 
IlomactiSj g. n., Verrill (ih. p. 71). Column low, cylindrical, with a distinct 
fold near the margin ; substance firm, surface smoothish. Disk not much 
wider than the column, concave, the whole surface, except a narrow region 
about the mouth, covered with small rounded perforated tubercles, arranged 
in wide radiating series, in which they are crowded in several transverse 
rows. Tentacles marginal, in life longer, with imperforate tips 3 in alcohol 
scarcely different from the tubercles in appearance. Mouth large. II. rupi- 
cola, sp. n., Verrill, Hong Kong. 
Stephanactis, g. n., Verrill (ih. p. 72). Column subcylindrical, somewhat 
elongated, not verrucose j substance firm and dense. Disk exceeding the 
column, covered with regular radiating lines of short unequal tubercles. 
The outer tubercles or tentacles are largest, and divided into several (3-6) 
short rounded lobes ; the next within are 2-3-lobed j the innermost are 
simple, rounded, or papilliform verrucse. The disk and tentacle-like organs 
do not seem to be capable of contraction, being fully expanded in alcohol. 
S. indica, sp. n., Verrill, Selio Island, Caspar Straits. 
Corynactis annulaia, Verrill (ih. p. 1 4),^Mclactis annulata, Verrill (1806). 
Heterozoanthus, g. n., Verrill (Am, J. Sc. xlix. p, 371). Polyps creeping on 
the surface of sponges &c. by thin basal stolon-like expansions of the base, 
from which the polyps arise in linear series, Polyps short, capable of con- 
tracting to a level with the basal membrane. Tentacles few, 12 to 24. In- 
tegument stiffened by foreign bodies imbedded in the skin, such as sponge- 
■apicula &c. D. scandcns, Sherbro’ Island, West Africa j II. sivifti, Verrill, 
z^Gemmaria swifti, Duch. et Michj II. axinelke (Schmidt, sp.), Adriatic. 
SCLEROBASICA. . 
Antipathes taxiformis and A. melancholica, Desieada, West Indies ; Araeh- 
nopathes eolumnaris and Bhipidipathes tristis, Guadeloupe : spp. nn., Duchas?- 
saing (/. c. pp. 22, 23). 
SCLERODERMATA. 
Besidta of * Porcupine^ Expedition. — Dr. P. M. Duncan having examined the 
Stony Corals dredged up in the ^ Porcupine ’ Expedition, has determined 12 
species, the majority of which came from midway between Cape Wrath and 
the Faeroes ; others were also found off the west coast of Ireland. The species 
may be enumerated thus : — 
Five species which have lasted since the early Caenozoic period, being 
found on the area dredged and as Miocene and Pliocene fossils elsewhere, 
viz.: — Caryophyllia Flem. ; Ceratocyathus Seguenz a ; Fla- 
helium laciniatum, M.-Edw. & Ilaime j Lophohelia prolifera (Pallas) ; 
Amphihelia mioccenica, Seguenza. Two of these, Caryophyllia borealis and 
Lophohelia prolifera, occur likewise in the recent fauna of the Mediter- 
ranean. 
