158 CATALOGUE OF THE ZOOPHYTES OF 



never rising from its support or sending off free shoots. At 

 extreme low water mark, at Cullercoats, a Bowerhankia is found 

 of a more lax mode of growth, sending off free shoots, and having 

 the cells a little more elongated and slender. This I take to be 

 a depauperated form of the true B. mhricata, though it never 

 assumes the luxuriant branched state seen in south-country 

 specimens. 



50. FARRELLA, Ehrenberg. 

 1. F. PEDICILLATA, 71. Sp. PI. VIII. 



Body ovate-oblong, yellowish, transparent, with long and 

 very slender pedicles, uniform in thickness throughout, 

 arising from a creeping fibre; tentacles 12. Length of 

 cell -^Q^h in. 

 On old shells of Buccinum undatmn and Fusus antiquus, from 

 deep water; not uncommon. — J. A. 

 This species differs from the Larjuncula {FarrelloL) elongata of 

 Van Beneden in the great length and slenderness of the pedicle, 

 which is usually two or three times the length of the cell, and 

 does not enlarge towards the top, as in the latter species. The 

 cells are rather narrower above than in F. elongata^ and the 

 number of tentacles does not exceed twelve in any of the speci- 

 mens that I have examined. The animal, as seen through the 

 transparent cell-walls, is of a pale yellow colour, with a brownish 

 red patch, indicating the position of the stomach. The ovaries 

 are white. The base of the cell is finely wrinkled, and at its 

 junction with the pedicle it forms a kind of joint, which can be 

 more or less twisted at the will of the animal. 



51. AVENELLA, Dahjell. 

 Body elongate-cylindrical, opaque, sessile, arising from a 



creeping fibre; tentacles numerous (20 to 30); gizzard? 



This genus differs from its allies {Farrella^ Boiverhankia, and 

 Valkeria) in the opacity of its cell-walls, and in the greater 

 number of tentacles. It also differs from Farrella^ in being 

 sessile. 



