ZOOPHYTES. 25 



(a) hydrothecae on simple stalks of variable length, viz. from 



three to nine rings ; and (b) branched stems of some height, 



with the alternate stalks of the hydrotheca? composed of from 



six to more than a dozen rings. Moreover, in these branched 



forms it is not uncommon to see more than one pedicel arise 



at the same fork, so as to cause the observer to fancy he is 



viewing the Campanulina turrita of Prof. Wyville Thomson ; 



only the hydrothecaj are much shorter in proportion to the 



length of the teeth. Some examples on a laminarian stalk 



had very long stems. The hydrothecas in all very closely 



resembled those on Dr. Allman's Campanulina repens (Hincks, 



Brit. H. Z. vol. i. p. 189, pi. xxxviii. fig. 1). No gonotheca 



were observed. 



Fam. 4. Lafoeidae. 

 G-enus Lafoea, Lamouroux. 

 Lafoea dumosa, Fleming ; Hincks, Brit. H. Z. vol. i. p. 200. 

 Common on various zoophytes from deep water. Some 

 varieties of this species have short stalks of one or two whorls 

 supporting the hydrotheca? ; but they are not quite so long as 

 those described under L.fruticosa, Sars, and the intermediate 

 forms show that they are to be referred to the present species. 



Lafoea fruticosa, Sars; Hincks, Brit. H. Z. vol. i. p. 203. 

 Occasionally on zoophytes from deep water, especially Ser- 

 tularia filicula. The pedicels of the hydrothecaj have from 

 three to five rings. 



Besides the above there are several microscopic forms closely 

 allied, which creep along the stems of various zoophytes. A 

 sessile form is common on Crista eburnea, and a stalked species 

 on Scriqwcellaria scriqiosa. 



Genus Calycella, Hincks. 

 Calycella syringa, L. ; Hincks, Brit. H. Z. vol. i. p. 206. 



Abundant on the stems of Hydrallmania falcata and other 

 zoophytes from deep water. 



