- SPINIGRADA. 
437 
worth noting, on account of the difficulty we have (though certainly less 
in 0 . albida than others) in keeping the arms perfect. 
Genus Ophiocoma. 
O. neglecta , Forb., 
I find common on the roots of Algce growing in rock-pools between 
tide-marks at Annalong and Ardglass. Common on the North-East coast. 
The first specimen obtained by Mr. Hyndman and myself, in Strangford 
Lough, in January, 1834, was set apart as an undescribed Ophiura. Dr. 
Johnston, taking a similar view, described the species as new in the fol- 
lowing year. 
Bangor, Co. Down, July 4 th , 1846. — Abundant under stones in shallow 
rock-pools between tide-marks, the only species I met with, except a very 
minute Ast. rubens. I dredged a specimen from about 8 fathoms in Strang- 
ford Lough, 1838, and have one similarly obtained in Belfast Bay, from 
Holy wood outwards. Lambay, W. T. ; Lahinch, Co. Clare, W. T. Many 
dredged at Killery (3 to 12 fathoms), 1840. Dredged in Clew Bay, 3 to 10 
fathoms, 1840. Tory Island, Mr. Hyndman. 
O. Ballii, mihi. 
Disk round or pentangular, covered with imbricated scales, two diverg- 
ing broadly wedge-shaped scales at the base of each ray. 
Largest specimen — disk 2^ lines broad, rays in length nearly equal to 
four times its breadth ; rays above with fan-shaped scales, beneath with 
rudely heart-shaped plates ; spines four in each row, rough, as long or 
longer than the breadth of ray. Colour pink. 
Several specimens of different size dredged some years ago in Dalkey 
Sound, on the coast of Dublin, by Dr. Ball. The species is named after 
my friend, than whom no one in Ireland does more to advance the science 
of natural history. 
Since obtained from Nymph Bank, and in several English localities. 
O.Jiliformis, Forb. Brit. Echin., p. 42. 
Abundant at Killery, most so of any species. A specimen was taken on 
a sandy bottom in Courtmasherry Harbour by Dr. Allman, who sent it to 
me for examination. Dublin coast, one specimen, Dr. Hassall, A. N. IT., ix. 
133. 
March 29 th, 1846. — A quantity found in haddock from Killough, but 
no other Ophiura ; there were remains of Amphidotus, bivalve Mollusca, 
&c. Apparently this specimen was dredged by Mr. Hyndman on mud 
from fifty fathoms off South Rock, Co. Down: the specimens are almost 
too bad for identification. Two or three specimens dredged in Round- 
stone Bay, 1840, W. T. Kingstown Harbour, Dr. Ball. 
March 4 th, 1848. — A number of this species mixed with O. rosula and 
O. albida were found in the stomach of haddock — several of the O.Jili- 
formis had the arms, but these partially broken, attached to the disk. 
O. brachiata , Mont. (sp.). 
Of this species, apparently known only to Montagu, two specimens 
were obtained in August, 1836, by Mr. Hyndman and myself, when dredg- 
ing off Dundrum on the coast of Down ; the body of the more perfect 
one is ^ of an inch in diameter, the least injured arm 3^ inches long, 
and where broken nearly as broad as at the base. 
April 23rd, 1842. — On opening a 10 lbs. haddock brought from New- 
