54 Scientific Proceedings^ Eoyal Dublin Society. 



is present. Some of the specimens were preserved in formalin, or in a 

 mixture of formalin and alcohol. Their appearance was so different from that 

 of the specimens preserved in alcohol only that they seemed to belong to 

 another species. They were limpet-shaped and of a pinkish hue, with scales, 

 smooth to the touch and eye. The specimens in alcohol were of a dirty 

 brownish white, and had coarse overlapping scales, and the body was strongly 

 compressed. These differences, however, were but superficial, and in every 

 detail as to size and shape of the scales in the different parts of the body, in 

 the shape of collar and form of deposits, all tl:e specimens were in intimate 

 agreement. 



Distribution. — Circumpolar, extending as far south as Massachusetts Bay ; 

 Shetland ; Japan ; 5-148 fms. (Bell, 1892a). 



Psolus phantapus (Struss), 1765. 



This species has been recorded from Bangor, Co. Down (Thomps., 1856), and 

 from north-east Ireland (Belfast, N.F.C. Guide), but no specmiens appear to 

 be extant. 



Distribution. — Arctic seas to British Islands, and North Sea ; New 

 England. 



Psolus sp. 



A few young specimens occurred in 5 hauls along the west of Ireland at 

 soundings of 250-560 fms. Bell (1892) has also recorded 3 young specimens 

 from off Co. Mayo. 



Order 2. PARACTINOPODA. 



Family SYNAPTINAE. 



Labidoplax digitata (Mont.), 1815. 



Synapta digitata, Bell, 1892. 



W. 141 — Dredge, 37 fms. One, var. ^yofundicola, Kemp. 



S.E. 1176 — Naturalists' dredge, 100 fms. One, var. profundicola. 



S.Pi.. 1391 — Dredge, 149 fms. One, vox. profundicola. 



W. 262— Dredge, 6-7 fms. One. 



S. 369— Trawl, 12|-13 fms. One. 



Previous Irish records. — Near Carrickfergus Castle (Thomps., 1856) ; 

 Counties Donegal and Galway, E.D.S. Fishing Surv., 1890 (Bell, 1892).; 

 Dingle Bay, 36 fms. (Beaumont, 1900) ; Ballynakill and Bofin Harbours, and 

 off Slyne Head, 12 fms., var. profundicola (Kemp, 1905) ; Clare Island, 

 11-19 fms., Hdga (Nichols, 1912). 



