38 Scientific Proceedings^ Royal Dublin Society. 



(M'Intosh). The latter is a sub-Arctie species, which appears to reach its 

 southern limit in Scottish waters. C. frondosa is widely known in Arctic 

 waters, but has also been taken off the coast of Portugal [Porcupine Exp.], 

 and in Florida and California. Although we do not, as iu the east, make 

 use of any of our Holothurians in the preparation of the far-famed soups, &c., 

 known as Trepang and Beche de Mer, yet, indirectly, they certainly are of 

 use to us, since many records exist of their occurrence in the stomachs of 

 some of our more important food fishes, e.g., the cod, haddock, and plaice 

 (Forbes, 1841 ; Leslie and Herdman, 1881 ; and Ostergren, 1902). I have to 

 thank Mr. Nichols and Miss Stephens, of the National Museum, Dublin, and 

 Mr. Deane, of the Belfast Museum, for much help in trying to trace the 

 types of early records of more or less doubtful species, also for the loan of 

 specimens for examination. 



The following is a revised list of species of the coast of Ireland :— 



Holothuria Forslcahli, Delle Chiaje. 

 Stichopus tremulus (Gunnerus). 



„ regalis (Ouvier). 

 Bathy plates Timrdi (Theel). 

 Mesothuria intestinalis (Asc. & Eath.). 

 Verrilli (Theel). 

 „ lactea (Theel). 



Laetmogoiie violaoea, Th^el. 

 Betithogone rosea, Koehler. 

 Cucumaria elongatn, Diib. & Kor. 



lactea, Forbes & Goodsir. 

 Eyndmani (Thomps.). 

 hispida (Barrett). 

 Normaiii, Pace. 

 saxicola, B. & R. 

 Thyonefusus (0. F. MiilL). 



„ raphamos, Diib. & Kor. 

 Phyllophorus pellucidm (Flem.). 



Dr%immondi (Thomps.). 

 Pseudocucuviis mixta, Ostergren. 

 LahidoplaK digitata, Mont. 



„ digitata, var. profundicola, Kemp. 



„ TJiomsoni (Herapath). 



Leptosynapta inhaerens (0. F. Mlill.). 

 Psolus phantapus (_Struss.). 

 Fahricii, Diib. & Kor. 



