CIKRHI-SPINIGRADA. 
441 
specimen of Dr. Ball’s is 7| inches in diameter ; the species attains 9 inches 
at Youghal. Dublin Bay, Dr. Ball. 
Genus Luidia. 
L. fragillissima, Forbes. 
Deep water near Youghal, Dr. Ball ; sometimes 16 inches in diameter, 
and with 7 rays. 
Not unfrequent at Glandore, Dr. Allman. Roundstone, Mr. M‘Calla. 
ORDER CIRRHI-SPINIGRADA. 
Echinidce. 
Genus Echinus. 
E. sphcera , Mull. 
Of general occurrence. Tory Island, Mr. Hyndman. 
E. miliaris, Leske. 
On all the Irish coasts. Newcastle, Co. Down, 1851 ; two of these were 
dredged by me from 4 fathoms in Strangford Lough, each 1^ inches in 
length, and 1 inch in height, not reckoning spines. I have taken several 
others of similar size up to If inch, the largest mentioned by Forbes. 
The form of these Echini (taken in Strangford Lough) was not “ de- 
pressed,” as it is stated by that author the species always is. They are of 
the same form as E. sphcera of equal size. 
E. Flemingii, Ball. 
In deep water off Youghal, South-West of Ireland, Dr. Ball. 
E. lividus, Lam. 
Coasts of Galway and Mayo, Dr. Ball. West coast of Cork, Dr. All- 
man. “ Bantry,” Cork Fauna. 
Roundstone, Mr. M‘Calla. Numerous among loose-rolled stones of 
granite — and consequently not burrowing — on the beach at Tory Island, 
Mr. Hyndman.* 
Genus Echinocyamus. 
E. pusillus, Mull. 
Taken many years ago in Belfast Bay, W. T. Numbers dredged from 
20 to 23 fathoms, shelly bottom, Belfast Bay, Oct. 3rd, 1846, Mr. Hynd- 
man. West coast of Cork, Dr. Allman. Cork Harbour, Mr. Humphreys. 
Roundstone, Mr. M‘Calla. 
Genus Spatangus. 
S. purpureus, Mull. 
Mag, 1842. — A number of fine specimens dredged up alive at entrance 
of Belfast Bay, by Mr. Hyndman. In same locality, 20 to 23 fathoms, 
* Bay of Dunfanaghy, Rev. Mr. Gallagher, 1852, also at Malin Head, 1853. — 
Ed. 
