ZOOPHYTES. 
21 
springs from an agglutinated basis of the valves of Pecten 
opercularis and gravel, 8 inches in diameter; and the 
gigantic tuft had tubes 11 inches in height. It also some¬ 
times fixes the valves of a living Mytilus modiolus so as almost 
to prevent motion. 
Tubularia coronata , Abildgaard; Hincks, Brit. H. Z. 
vol. i. p. 119. 
Abundant in deep water. I am obliged to Prof. Allman for 
discriminating wrinkled specimens of this species, in 1863. 
Suborder II. THECAPHORA. 
Fam. 1 . Campanulariidse. 
Genus Clytia, Lamouroux. 
Clytia Johnstoni , Alder; Hincks, Brit. H. Z. vol. i. p. 143. 
Abundant on Alcyonidium hirsutum and seaweeds in the 
pools near low-water mark, as well as coating the stems of 
Laminarice with a hairy fringe fully half an inch in height. 
In a fine example of the latter many of the stems possess one 
or two branches, and the gonothecas here and there have a 
stalk composed of several rings. 
Genus Obelia, Peron & Lesueur. 
Obelia geniculata , L.; Hincks, Brit. H. Z. vol. i. p. 149. 
Common on laminarian blades thrown on the West Sands 
after storms, forming a miniature cover amidst which many 
Nudibranchs find food and shelter. It occurs plentifully also 
on Halidrys siliquosa and other seaweeds near low-water 
mark, and on crabs. In the interior of many of the gonothecas 
are the young of a Pycnogonidian. 
Obelia longissima, Pallas; Hincks, Brit. H. Z. vol. i. p. 154. 
Abundant in deep water. It bristles on every branch or 
fragment of wood which has been submerged for some weeks. 
It appears also in a very interesting condition in the peculiar 
rounded balls formed by the rolling action of the waves on 
th& beach ; these zoophytic masses are either spherical or 
