40 Scientific Proceedings, Royal Duhlin Society. 



deeper water with Mesothiiria intestinalis (Asc. & Eath.), Cucumaria hispida 

 (Barrett), and Laetimgone violacea, Theel. Nichols (1902, p. 245) enumerates 

 8 records of various expeditions off the west of Ireland (6 off the Kerry 

 coast) at soundings of 70-500 fms. 



Distribution. — Norway and Shetland to north coast of Spain, 45-672 fms. 

 (Bell, 92a). 1476 fms. [Porcupine Exp., 1869J. 



Stichopus regalis. (Cuvier), 1817. 



Holothuria colnmnae, Cuvier, 1817. 



„ triquetra, Delle Chiaje, 1828. 



Five specimens, 75-155 mm. in length. 



The above were trawled by the Helga, but unfortunately the label 

 belonging to them has been lost. 



The calcareous deposits in skin were compared with those of a specimen 

 from the zoological station at Naples, now in the Irish National Museum. 



Distribution. — Bay of Biscay, Canaries, Mediterranean, (?) Australia 

 (Semper, 1868'). 



Vertical Range. — Abundant between 55 and 98 fms. (Koehler, 1896) ; 

 58-224 fms. (Perrier, 1902). 



Family SYNALLACTINAE. 



Bathyplotes Tizardi (Theel). 



Bdthy/'lotrs nutans, Sladen, 1891. 



StichopuH Tizardi, Theel, 1882; Bell, 1892; and Koehler, 1896. 



Rerpysidia [Stichopua) Tizardi, Perrier, 1898. 



S.E. 331— Trawl, 610-680 fms. Twenty-one. 

 S.E. 336— Trawl, 673-720 fms. Five. 

 S.E. oOO-Trawl, 623-666 fms. Two. 



These specimens measure 75-110 mm. in length About sixty other 

 specimens (not preserved) were trawled in 10 hauls in the same area namelv, 

 from 50° 30' to ni' 45' N. lat., and from 11° ^0' to 12 .^0' W. long., 

 over soundings of 400-770 fms. 'The specimens referred by Sladen 

 ('91, p. 702) to Bathyplotes natans (Sars) were taken within this area. I have 

 been able to examine two of these specimens, which are deposited in the 



1 See note in preface, 



