126 CATALOGUE OF THE ZOOPHYTES OF 



not until lately that I was so fortunate as to meet with its ovi- 

 capsules, the peculiar form of which will, I thinlc, remove all 

 doubt on the subject. This species is almost equally common on 

 our coast with that described by Dr. Johnston (which I propose 

 calling C. Johnstom), but on account of its usually inhabiting 

 deeper water, it is not so generally met with. They may, how- 

 ever, be occasionally found mixed together on the same zoophyte, 

 particularly on the stem of Plumularia falcata ; but when their 

 peculiar characters are known, they can readily be distinguished 

 from each other. C. voluhilis, as here distinguished, is scarcely 

 more than half the size of G. Johnstoni, and has the cells usually 

 narrower and more cylindrical, with the crenations of the margin 

 blunter and shallower. But the best distinguishing character is 

 in the pedicle, which in this species is always spirally twisted 

 throughout, though becoming less marked towards the top, where, 

 in most cases, a single spherule only supports the cup. The 

 creeping stem is generally, but not always, twisted when attached ; 

 but when, as is often the case, it becomes free, its spirally twisted 

 character is beautifully displayed, and it has the appearance of a 

 minute transparent cord, with a club-shaped termination. The 

 pedicles and cells arising from the free part of the stem, are 

 always shorter than where it is attached, and more nearly resem- 

 ble Ellis's figure. The ovicapsules are oblong flask-shaped, 

 smooth, compressed laterally, and produced into a very long and 

 narrow neck : they rise from the creeping stem by short pedicles 

 of two whorls. 



2. C. Johnstoni, n. sp. PI. IV., fig. 8. 



Stem creeping, plain ; pedicles long, with numerous close- 

 set rings at the base, and more or less ringed at the 

 top ; the middle part usually plain, but sometimes 

 ringed ; cells deep and rather large, with ten or twelve 

 strong denticles round the rim : ovicapsules nearly 

 sessile on the creeping stem, ovate-oblong, strongly 

 plicated transversely, and truncated at the top. Length 

 one and a-half to two-tenths. 

 Campanularia volubilis, Johns. Brit. Zooph., 107, Avood-cut 



