CCELENTERATA. 
777 
New genera : — 
Campaniclava (Allman, Ann. & Mag. Nat. Hist. 1864, xiii. p. 351). 
Trophosome : Coenosarc a creeping, filiform, ramified hydrorhiza invested by 
a periderm ; hydrocaiilus undeveloped. Polypites sessile on the hydrorhiza, 
claviform, with scattered filiform tentacula. Gonosome'. Gonophores pha- 
nerocodonic, sessile on the creeping hydrorhiza. Umbrella at the time of its 
liberation deep bell-shaped; manubrium simple-mouthed, shorter than the 
height of the bell-cavity; radiating canals four; marginal tentacles two, 
continuous with two opposite radiating canals, and having bulbous bases 
without distinct ocellus; two intervening smaller bulbs corresponding to the 
termination of the other two radiating canals in the circular canal. Type 
C. cleodorcB (Gegenb. sp.). 
Corynopsis (Allman, 1. c. p. 353). Trophosome : Hydrorhiza ramified and 
creeping ; hydrocaulus rudimental or absent. Polypites claviform, with a 
single verticil of filiform tentacula surrounding the base of a conical meta- 
stome. Gonosome: Gonophores phanerocodonic, borne on the body of the 
polypite at the proximal side of the tentacular verticil. Medusa at the time 
of liberation deep bell-shaped ; manubrium not reaching the orifice of the 
bell, and having its mouth surrounded by four short tentacles ; radiating 
canals four, each terminating distally in a bulb, from which are developed 
two tentacles, each with a distinct ocellus at its base. ' Type C. alderi 
(Hodge, sp.). 
Hhkoclinc (Allman, 1. c. p. 355). Trophosome: Coenosarc forming an ad- 
herent stratum supported by a solid chitinous expansion.” Polypites de- 
veloped at intervals from the free surface of the coenosarc ; tentacles filiform, 
in a single verticil round the base of a conical metastome. Gonosome : Gono- 
phores phanerocodonic, sessile on the free surface of the coenosarc. Um- 
brella, at the time of liberation, deep bell-shaped ; manubrium large, with a 
four-lipped mouth, but not extending beyond the margin of the umbrella ; 
four radiating canals continued distally by four marginal tentacles with bul- 
bous bases ; three shorter tentacles developed in each interradial space. Type 
R. areolata (Alder, sp.). 
Ileteractis (Allman, 1. c. p. 369). Trophosome : Polypite solitary, borjie on 
the summit of a simple rooted hydrocaulus; two verticils of tentacles, a 
proximal and a distal, — the tentacles composing the proximal verticil long 
and “ annulated ” (Sars), those composing the distal verticil short and capi- 
tate. Gonosome : Gonophores phanerocodonic, borne upon peduncles, which 
arise from the bod}'^ of the polypite at the distal side of the proximal verticil 
of tentacles. Umbrella in the form of a shallow bell, with four radiating 
canals, one large marginal tentacle, and three rudimental ones. Type 11, 
annidicornis (Sars, sp.). 
Heterocordyle (Allman, 1. c. p. 365). Trophosome : Coenosarc consisting of 
a simple or branched hydrocaulus, which arises from a creeping, filiform and 
anastomosing hydrorhiza, the whole invested by a chitinous periderm. Poly- 
pites fusiform, with a single verticil of filiform tentacula round the base of a 
conical metastome. Gonosome: Gonophores adelocodonic, borne by gono- 
blastidia, which are developed [solely ?] from the hydrorhiza ; .sporosacs of 
