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LIII. 
REPORT Ol^r A COLLECTIOIS' OF ECHIIS'ODERMATA EROM 
THE SOUTH-WEST COAST OF IRELAND, DREDGED m 
1888 BY A COMMITTEE APPOmTED RY THE ROYAL 
IRISH ACADEMY. Ry W. PERCY SLADEIST, E.L.S., E.G.S., 
Secretary of the Linnean Society. (Plates XXY. to XXIX.) 
[Eead June 23, 1890.] 
The Rey. W. S. Geeen kindly asked rae to report upon the collection 
of Echinodermata obtained during the dredging cruise of 1888. The 
Committee were fortunate in obtaining an interesting series of 
forms. Eorty species are enumerated in the following lists, viz. : — 
Crinoidea, 1; Asteroidea, 17; Ophiuroidea, 6; Echinoidea, 10; Holo- 
thuroidea, 6. Eour of the species of Asterids and one of the Echinids 
are new. Several of the other forms are either rare or extend our 
knowledge of their geographical and bathymetrical distribution. The 
novelties consist of a new species of Hymenaster, a new species of 
Pteraster, two new species of Pentagonaster, and one new species of 
Porocidaris. The collection as a whole furnishes striking evidence of 
the richness of the locality, for it is not a little remarkable that so 
large a number of species of Echinoderms should have been taken from 
the comparatively limited number of eight stations. The majority 
(24 species) were dredged from depths of 345 and 750 fathoms, and 
are consequently important additions to our lists of the Eauna of the 
British Area. 
I.— CRINOIDEA. 
1. Antedon rosacea (Linck). 
Locality — Long Island Sound. Depth 4 fathoms. 
IL— ASTEROIDEA. 
1. Flutonader Mfrons (Wyv. Thorns.), Sladen. 
Locality— IjQi. 51° I'N. ; Long. 11°50'W. Depth 750 fathoms. 
2. Pontaster limbatus, Sladen. 
Locality — About 56 miles off Dursey Head. Depth 345 fathoms. 
