VINE : NOTES ON TOKEDALE POLYZOA. 
75 
Class POLYZOA, Busk, Hincks, &c. 
= Bryozoa (pars) Ehreuberg : Bryozoa (pars) of American authors, 
Bryozoa, Ruess, Manzoni, Roemer, Waters. 
Order GYMNOLEMATA, Allmau. 
Sub-order, cyclostomata. Busk. 
Zomcia tubular, with a plain inoperculate orifice. Marsupia and 
appendicular organs wanting. 
Family FENESTELLlDiE (restricted). 
Group A. 
1883. Foui'th British Association Report on Fossil Polyzoa (mihi) 
1884. Naturalist, p. 60, 1885, pp. 208-214 (Northumberland Polyzoa). 
Zoarium forming large and small fenestrated or non-fenestrated 
expansions. Zocecia arranged biserially in the branch, tubular, but 
(in section) slightly truncated at the distal extremity ; orifice circular, 
opening on one side only. 
Genus Fenestella (restricted). 
1. Fenestella plebeia, M'Coy, Syn. Carb. Foss., Ireland, pi. 29, 
fig. 3. 
Fenestella pleheia^ Shrubsole, Quart. Jour. Geol. Soc, May, 1879, 
p. 278 ; Ibid May, 1881, p. 179. 
Fenestella plebeia, Vine, Proceed. York. Geol. and Polyt. Soc, Vol. 
YIL, 1881, p. 336; Ibid Vol. VIII., 1883, p. 164. 
As Mr. G. W. Shrubsole gives no fewer than fourteen synonyms 
of the above species, the student should consult the papers referi ed to. 
There are several fragments of F. jMeia in the different shale 
washings of North Lancashire, some have very marked features, 
while others belong to common forms of this widely distributed 
species. One noticeable fragment has a well formed, rounded keel, 
but without tubercles, and slightly different from the Scotch or even 
Yorkshire F. plebeia. Other fragments on thi^ shale show the reverse 
aspect only, and these are of ordinary character. 
Localities and Horizon: Yoredale ; IL^Iker Park, Little Urswich. 
Scar Limestone ; common. 
