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T. papillosa, Müll.

Genus THYONE.

May, 1846.-Six specimens found among Killinchy oysters in Belfast market, brought to me alive.

October, 1846.-Ten specimens, as above.

Bantry Bay, 15 to 30 fathoms, Mr. M'Andrew. A few dredged at Killery, 1840.

T. Portlockii, Forbes.

Belfast Bay, Colonel Portlock.

T. raphanus, Duben and Koren.

A specimen was dredged from between 15 to 30 fathoms about Bantry Bay, by Mr. M'Andrew, in 1846.

C. digitata, Mont. (sp.).

Genus CHIRODOTA.

On the 18th of December, 1843, an individual of this species, which had hitherto been obtained only by Montagu, in Devonshire, was found lying on the sand between tide-marks near Carrickfergus Castle, during a search for natural history objects by Mr. Hyndman and myself.

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Vermiform, brownish-white, skin striated concentrically and covered with brown papillæ.

This is a fine and large species; throughout the greater part of its length posteriorly, the papillæ are more numerous and larger on the two sides than on the dorsal and ventral surfaces, and are particularly numerous at the posterior extremity, which is pointed and not perforated. It does not appear to be parasitic.

Specimens have been obtained at Miltown Malbay by Professor Harvey, and at the South Islands of Arran (an adjacent locality) by Dr. Ball. Professor Harvey informs me that this species is not uncommon under stones in sand-covered rocks at Miltown Malbay.

S. Harvei, Forbes.

Two specimens of a Syrinx were dredged in Strangford Lough from a depth of 15 to 20 fathoms on an oozy bottom in June last, by Mr. Hyndman and myself. They agree with the S. Harvei, and at the same time with the S. granulosus, M'Coy (Annals, vol. xv. p. 272, pl. 16, fig. 2), accordingly as they are viewed by the unassisted eye or by magnifying power. The body of the former is described as being "quite smooth," of the latter "nearly smooth, very minutely and uniformly granulated;" a difference which we might expect to find between examples of 24 and 7 inches in

length; these being the respective dimensions of those described by Professor Forbes and Mr. M'Coy. The body of my specimens the larger of which is under 2 inches in length-appears to the unassisted eye not only quite smooth, but shining, though in a subdued tone; yet, when magnified, extremely minute papillæ are seen over its surface. I therefore regard S. granulosus as not distinct from S. Harvei. The figure of S. granulosus represents my specimens very well: they are of a very pale greyish-brown colour.

S. Forbesi, M'Coy (Ann. Nat. Hist., vol. xv.). Roundstone, not uncommon, Professor M'Coy.

S. tenuicinctus, M'Coy (Ann. Nat. Hist., vol. xv.). Very common, West of Ireland, Professor M'Coy.*

Genus SIPUNCULUS.

S. Bernhardus, Forbes.

Belfast and Strangford Loughs; Killery in the West, W. T.

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North of Ireland, W. T. Dublin Bay, Dr. Coulter. Roundstone, at low-water mark, Mr. M'Calla. Dredged in Birterbuy Bay, Dr. Farran.

From Larne Lough, in October, 1849, Mr. Wm. Darragh brought two of these, where they were dug up with the two species of lug-worm. They are used as bait, but the fish do not take them so freely as they do the two kinds of lug-worm. The young coal-fish take them more freely than the young codlings do.

T. Neptuni, Gærtn.

Genus THALASSEMA.

North of Ireland, Mr. Templeton.

Mr. Hyndman found two specimens of an unknown species (??) of this genus under stones at Tory Island.

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South of Ireland, Miss Ball. Two specimens obtained at different

times.

V. mutica, Lam.

Genus VELELLA.

August 11th, 1836.-Groomsport, W. T.

June (end of), 1840.-Dr. Wm. M'Gee gave me several specimens which he picked up after northern winds on the strand at Portrush; in an hour he would find about twenty specimens.

July, 1843.-On looking to specimens in spirits' from Larne, Portrush, and Youghal, they seem to be V. limbosa, as I think specimens were picked up by us about Ballyshannon, Bundoran, &c., on the western coast in July, 1840.

South of Ireland, Mrs. Mant.

V. subemarginata, Thompson.

Membranous base oblong, slightly cut round the edge, in length 2 inches 10 lines, breadth 1 inch 7 lines: crest almost crescentic in form or obscurely pointed at highest part, thick in substance, with a minute veinlike ramification appearing throughout; body proper, or skeleton, of a narrow oblong form, rounded at ends, in length 2 inches 4 lines, breadth 10 lines.

Colour when recent according to Professor Allman: "Disc, margin and tentacula fine sky-blue; sail light blue, nearly transparent, margined with delicate violet. Skeleton colourless and transparent."

This species differs from the ordinary Velella of the Irish coast in its greatly superior size, in the margin of the membranous base being slightly emarginate, in the crest being of a much stronger consistence and of a more rounded outline.

The specimen here described was given to me by Professor Allman, who saw great abundance of them on the shore of Courtmasherry Harbour (County Cork) after a south-westerly gale late in the autumn of 1838 or 1839, but preserved only one.

This description of a Velella from spirits must necessarily be unsatisfactory, but it seems to me better that a species should, under such circumstances, be noticed than passed over altogether-named it perhaps should not be, but this has already been done in my Report on the Invertebrata of Ireland; the specific name there is given erroneously emarginata.

A. Gettiana, Hyndman. Belfast Bay, Mr. Getty.

B. cucumis, Fabr.

Genus AGALMA.

CILIOGRADA.

Genus BEROE.

Bangor, Co. Down, July, 1846, Mr. Hyndman and W. T.

B. fulgens, Macartney.

On Macartney's authority (Prof. E. Forbes). This is a mistake; the specimens were taken in Herne Bay.

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"M. campanulatum, Ehrenb. Ballycastle; Portrush, near Giant's Causeway."

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Ballycastle, Professor Forbes. Strangford Lough, Mr. Patterson.

S. tubulosa, Lesson.

Genus SARSIA.

April 18, 1840.-I had the satisfaction to-day of identifying with this species a Medusa, of which several individuals were brought to me by Mr. Hyndman, just after their capture in Belfast Bay. On calling the attention of Mr. R. Patterson to them, a reference to his notes on Medusa showed that he had procured the same species at Larne (County Antrim), in May, 1835, and June, 1838; and again at Bangor (County Down), in July, 1839. As my friend could not find the species described-Sars' work he had not for reference-he drew up a detailed and interesting account of the animal, accompanied by several characteristic sketches of it in various positions.

Having remarked that one of my specimens, which was in a phial containing 1 ounce of sea-water, appeared as lively after four days' captivity as at first, although the fluid had not been changed, nor any nutriment added, I, before leaving home for some days, handed it over to Mr. Patterson, that the period the animal would live under such circumstances might be noted. From him I learn that this individual lived thus for twelve days (from the 18th to the 30th of April), and that for the first ten it retained its ordinary vivacity.

O. papillata, Müll.

Genus OCEANIA.

Of this very minute species, 13 line in diameter, a specimen occurred to me in Strangford Lough in October.

Genus THAUMANTIAS.

T. hemisphærica, Müll.

On October 5, 1838, I obtained one of these Medusa in Belfast Bay, and a day or two afterwards many specimens were brought me by Mr. Hyndman from the same locality. In size they rather exceeded Müller's, measuring 5 lines in diameter in their most depressed state. This and the preceding species were determined from accurate drawings taken of the living animals. Mr. R. Patterson informs me that he obtained the P. hemisphærica at Larne in the summer of 1835.

T. pileata, Forbes.

North of Ireland, at Portrush, Smith and Forbes.

T. Thompsoni, Forbes.

West and South of Ireland.

Genus EPHYSA.

E. simplex, Penn.

North of Ireland.

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Probably, as Cuvier suggests, some species in a mutilated state," Professor E. Forbes.

E. hemisphærica, Templeton.

North of Ireland.

"Perhaps a young state of Aurelia," Professor E. Forbes.

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