252 Z. ASCIDIOIDA. Valkeria. 



Hah. At the roots of Fuci about low- water mark. " In Sussex - 

 iae littore supra Fucos siliquosum et lumbricalem frequentem banc 

 speciem observavi," Pallas. Leith shore, Jameson. " Found in 

 Belfast Lough, and Dublin Bay, &c." Templeton. 



" This extremely small climbing- coralline arises from very minute 

 tubes, by which it adheres to Fucus's, and other marine bodies ; and 

 is so disposed from its jointed shape, that it climbs up and runs over 

 other corallines and Fucus's, as Dodder does over other plants.'' 

 Ellis. The tufts thus formed resemble a flock of hair with clusters 

 of nits scattered over it, and though the comparison is an ugly one, 

 it is yet expressive. The filaments are capillary, smooth, pellucid, 

 kneed and jointed at their dichotomies, immediately imder which the 

 cells are usually placed in a short row containing from four to eight 

 or nine cells, growing gradually shorter outwards, and so arranged as 

 to resemble a Pan's-pipe in miniature " with cylindrical reeds vary- 

 ing in their length." — That the Polypes are ascidian is satisfactorily 

 proved by Cavolini ; and Lister informs us that they have eight ciliat- 

 ed arms. 



24. Valkeria, * Fleming. 

 Character. Polyjndom confervoid, horny, Jistular, irregu- 

 larly branched ; the cells ovate, clustered or scattered. — Polypes 

 ascidian, without a gizzard.^ 



V. CuscuTA, branches opposite ; " cells usually in pairs, op- 

 posite." Ellis. 



Climbing Dodder-like Coralline, Ellis, Corall. 28, no. 26, pi. 14, fig. c. C 

 Sertularia Cuscuta, Lm. Syst. 1311. Pall. Eleneh. 125. Ellis and 



* " This genus is dedicated to the late Dr John Walker, Professor of Natural 

 History in the University of Edinburgh, a laborious and an accomplished natu- 

 ralist." Fleming. Sir J. E. Smith characterises him as " a most amiable, wor- 

 thy and ingenious man." Sir James visited Moffat in the autumn of 1782, of 

 which parish Dr W. was the minister. " 1 spent that day," he says, " and the 

 next very happily with the Doctor ; he is a very agreeable man : the life and 

 soul of Moffat ; his loss will be equally felt by the gay, the industrious, and the 

 unhappy," — alluding to his approaching removal or translation to Collington, 

 near Edinburgh. His posthumous " Essays on Natural History," Edin. 1812, 

 Bvo. is an interesting volume, which I have had occasion to regret was not more 

 noticed in our Faunas and Floras. 



■f The animal of Valkeria differs from that of Vesicularia and Bowerbankia, 



" in the entire absence of the manducatory organ ; a difference which it is of 



great importance to observe with reference to a natural arrangement of the 



class " Farre- 



3 



