. The British Tunicata; an unfinished monograph. Sea squirts; Tunicata. ASCIDJA VITREA. 145 We have been unable satisfactorily to ascertain the species which Professor Van Beneden describes under the name of Ascidia vitrea, and therefore give it a place here with diffidence. It is stated by Forbes in ' British Mollusca' to have been met with in Killery Bay, by Ball, Thompson, and himself, on Alcyonidium, in 1840. Specimens of an Ascidian on Alcyonidium gelatinosum in Mr. Thompson's collection are marked with this locality and date; but they appear to us to be the young of A. sordida. The speci
. The British Tunicata; an unfinished monograph. Sea squirts; Tunicata. ASCIDJA VITREA. 145 We have been unable satisfactorily to ascertain the species which Professor Van Beneden describes under the name of Ascidia vitrea, and therefore give it a place here with diffidence. It is stated by Forbes in ' British Mollusca' to have been met with in Killery Bay, by Ball, Thompson, and himself, on Alcyonidium, in 1840. Specimens of an Ascidian on Alcyonidium gelatinosum in Mr. Thompson's collection are marked with this locality and date; but they appear to us to be the young of A. sordida. The species met with at Cullercoats and published under this name in Tyneside Club Transactions requires' also to be re-examined. It is probably the young of Corella paraUelogramma. EXCLUDED SPECIES, mentioned in Introduction but not given in Synonymy. • Ascidia anceps TEMPLETON Mag. Nat. Hist, vii (1834), p. 131. IRELAND.—Carrickfergns, Belfast Lough, Antrim, dredged, 1811 (Templeton,). A. gemina TEMPLETON Mag. Nat. Hist, vii (1834), p. 129. IRELAND.—Strangford Lough, Down (Thompson, 1840). A. papilla DALYELL Edinb. new Philos. Journ. xxvi (1839), p. 153. SCOTLAND (Dalyell). A. rugosa COLDSTEEAM Edinb. New Pliilos. Journ. ix (1830), p. 249. SCOTLAND.—East Lough, Tarbet, Argyllshire (Cold stream).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Alder, Joshua, 1792-1867; Hancock, Albany, 1806-1873; Hopkinson, John, 1844-1919; Norman, Alfred Merle, 1831-1918; Embleton, Dennis, 1810-1900. London, Printed for the Ray society
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