POLYPES. 
335 
The following Zoophytes have been added by Thompson to the Fauna 
of Ireland (ibid. p. 481) : — Hydra viridis, Actinia viduata, Mull., and 
Cliona celata, Grant. 
The Zoophytes which are found on the coast of Aberdeen, have been 
enumerated by Macgillivray, and comprehend the following species 
(ibid. vol. ix. p. 462) : — Coryne squamata ; Echinocorium clavigerum, 
Hass. ; Tuhularia indivisa, larynx and ramea ; Thoa halicina and 
muricata ; with eleven species ; Thuj aria thuja; Antennu- 
laria antennina ; Plumularia, with five species ; Laomedea dichotoma, 
geniculata, gelatinosa ; Gampanularia, with four species; Alcyo- 
nium digitatum ; Actinia gemmacea and dianthus ; Crisia, with three 
species ; Notamia loriculata ; Tuhulipora patina and serpens ; Disco- 
pora hispida (?) ; Gellepora, with four species; Lepralia, with six species ; 
Memhranipora pilosa ; Flustra, wiih. four species; Gellularia scruposa 
2 indi. reptans ; Farcimia sinuosa, Hass.; Alcyonidium, with three spe- 
cies ; and Gliona celata. 
The Zoophytes of the coast of Cornwall have been ennumerated by 
Couch, among which Flustra Peachii is mentioned as a new species 
(ibid. vol. X. p. 60). 
A new Actinia has been described by Forbes, under the generic 
name Gapnea, with the following character (ibid. vol. vii. p. 81) : — 
Body cylindric, invested in part by a lobed epidermis, and adhering by 
a broad base ; tentacula simple, very short, retractile, surrounding the 
mouth in concentric series. The only species, Gapnea sanguinea, was 
discovered in deep water in the Irish Sea. The tentacula are arranged 
in three series, sixteen in each ; the epidermis, which is eight-cleft at 
its upper part, is of a brown colour ; the body is elsewhere vivid vermi- 
lion. He has also described another Actinia, found in the .^gean Sea 
(ibid. vol. viii. p. 243), which has a vermiform appearance, and lives 
free, in a self- constructed tube under the sea-sand. The animal is allied 
to the Edwardsia, which is yet to be mentioned, but differs from it 
chiefly by the circles of tentacula, of which that of the margin of the 
mouth is composed of numerous short tentacula, while the margin of the 
disc is covered by a circle, consisting of thirty-two larger tentacula; 
these are yellow and brown spotted, and, in retracting, are not con- 
cealed by the external cuticular covering. The disc and oral tentacula 
are white, as well as the upper part of the body ; the remainder to the 
extremity is yellowish-brown. It is protected by a membranous tube, 
which is itself strengthened by an incrustation of gravel and shells, in 
the manner of a Terebella. If the animal be injured, it leaves its 
tube, and moves about in the water like an Annelide. On being sup- 
plied with sand and gravel, it proceeded to construct another tube, rolling 
itself in the sand, and secreting glutinous matter for the membranous 
lining. It eats voraciously, and attacks other animals that come within 
379 
