252 
Z. ASCIDIOIDA. 
Valkeria. 
Hab. At the roots of Fuci about low- water mark. “ In Sussex - 
ise littore supra Fucos siliquosum et lumbricalem frequentem hanc 
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 under 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. Polypidom confervoid , horny , Jistular, irregu- 
larly branched ; the cells ovate , clustered or scattered. — Polypes 
ascidian , without a gizzard .*f* 
V. Cuscuta, branches opposite ; “ cells usually in pairs , op- 
posite.” Ellis. 
Climbing Dodder-like Coralline, Ellis, Corail. 28, no. 26, pi. 14, fig. c. C. 
Sertularia Cuscuta, Lin. Syst. 1311. Pall Elench. 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 Moflfat in the autumn of 1782, of 
which parish Dr W. was the minister. “ I 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, 
8vo. is an interesting volume, which I have had occasion to regret was not more 
noticed in our Faunas and Floras. 
| 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. 
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