Massy — The Holothirioidea of the Coasts of Ireland. 39 



The following doubtful species has also been recorded from Ireland : 



Cucumaria Andrewsi (Farran), 1852. 



Order ACTINOPODA. 



Sub-order 1. ASPIDOCHIROTAE. 



Family HOLOTHUEIIDAE. 



Holothuria Forskahli, Delle Chiaje, 1823. 



Holotlmria nigra. Gray, 1848. 



„ catanensis, Grube, 1864. 



St-ichopxis SelenJcae, Th. Barrois, 1882. 

 IToloihuria Forshalii, Marenzeller, 1893. 



A. 94 — Dredge, 8 fms. One, eight inches in length. 



W. 36— Trawl, 16-22 fms. One. 



Authentic records of this species show that it lives in many parts of the 

 west of Ireland, from the Kenmare Eiver to Donegal, from between tide- 

 marks to a deptli of 30 fms. (Nichols, 1903 and 1»12 ; Kemp, 1905). 



Distrihition. — West Ireland and south-west England to Mediterranean. 



Stichopus tremulus (Gumierus), 1767. 



Stichopus Bichardi, Her., 1896. 

 Holothuria ecalcarea, M. Sars, 1858. 



„ calcarea, Jarzynsky (Wagner, 1885) 



This species is widely distributed off the west coast of Ireland, and 

 occurred in 76 of our hauls from 50° 14' N. to 54° 7' N. lat., by 

 10° 24' W. to 14° 34' W. long., at soundings of 72-710 fms. 'I'wo- 

 thirds of these stations were in the southern half of the area. Of those 

 stations where the depth was 200-700 fms., it was abundant in more than 

 half. Where the depth was 200 fms. it was abundant in one third of 

 the hauls. Where the depth was only 72-100 fms. it was abundant at one- 

 eighth of the stations. A wide tract from 52° to 54° N. lat., by 11° to 

 14° W. long., with a depth of 91-208 fms., was explored by 15 hauls, 

 and here the present species was the only Holothurian observed, dense 

 populations being noted on four occasions. It was always associated with 

 Spatangus Raschi, Loven, and sometimes with Luidia Sarsi, Diib. & Kor, 

 and Uckiiius acutus, Lam''. Between 54° and 55° N. lat. it shared the 



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