"^'iSi!^,i:t" ^MMm in the Uni.

496 COELENTERATA.
prominent verrucae, arranged in vertical lines. Simple tentacles, in several
TOWS, submarginal, with compound and much subdivided tentacle-like organs
both outside and inside of them, the latter covering the disk more or
less completely. A. orientalis, sp. n., Verrill, Bonin Islands.
Dicostoma fungiforme, sp. n., Verrill (ib. p. 70), Port Lloyd, Bonin
Islands.
Homactis, g. n., Verrill (ib. 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; in alcohol
scarcely different from the tubercles in appearance. Mouth large. H. rupicola,
sp. n., Verrill, Hong Kong.
Stephanactis, g. n., Verrill (ib. p. 72). Column subcylindrical, somewhat
elongated, not verrucose; 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 (3-5)
short rounded lobes; the next within are 2-3-lobed; the innermost are
simple, rounded, or papilliform verrucae. 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, Gaspar Straits.
Corynactis annulala, Verrill (ib. p. 74),=Melactis annulata, Verrill (1866).
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 contracting
to a level with the basal membrane. Tentacles few, 12 to 24. Integument
stiffened by foreign bodies imbedded in the skin, such as sponge-
•?picula &c. H. scandens, Sherbro' Island, West Africa; //. mifti, Verrill,
= Gemmaria swifti, Duch. et Mich; H axinella (Schmidt, sp.), Adriatic.
SCLEROBASICA.
Antipathes taxiformis and A. melancholica, Desieada, West Indies; Arachnopathes
columnaris and Rhipidipathes tristis, Guadeloupe : spp.'nn., Duchassaing
(I. c. pp. 22, 23).
SCLERODERMATA.
Results 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 Cfflnozoic period, being
found on the area dredged and as Miocene and Pliocene fossils elsewhere,
viz.:— Caryophyllia borealis, Flem. : Ceratoeyathus ornatus, Seguenza; Flabellum
laciniatum, M.-Edw. & Haime; Lophohelia prolifera (Pallas);
Amphiheha miocanica, Seguenza. Two of these, Caryophyllia borealis and
Lophohelia prolifera, occur likewise in the recent fauna of the Mediterranean.