526 Scientific Proceedings, Royal Dublin Society. 



Amphiura filiformis, 0. F. Miill. 



Killary Bay, Co. Galway, 9-15 fms. ; Kenmare River, Co. 

 Kerry, 21 fms. 



Ophiocoina nigra, 0. F. Miill. 



Of! Malin Head (Ireland's North Point) 22-23 fms. ; Kil- 

 keiran Bay, Oonnemara, 4-10 fms. 



Ofthiotbrix fragills, Linn. 

 Two specimens from 220 fms., 40 miles off Achill Head, Co. 

 Mayo (St. 63) ; 127 fms., 20 miles off Achill Head (St. 72) ; Black- 

 sod Bay, Co. Mayo, 5-6 fms. 



Opbiothrix liuetkeni, Wyv. Th. 

 I am glad to say that the view I expressed last year (Ann. and 

 Mag. Nat. Hist. viii. 1891, p. 338) as to the distinctness of this 

 species is confirmed by specimens taken 50 miles (220 fras.) and 

 40 miles (115 fms.) off Bolus Head (Sts. 124, 125). 



Opliiobyi'sa bystrlcis, Lym. 

 A young form, which may, perhaps, he referred to this species,, 

 was dredged in 220 fms., 40 miles off Achill Head (St. 63). This 

 must be a very fine species when adult ; unfortunately the original 

 "Porcupine" specimen has been dried. 



V. — ECHINOIDEA. 

 Cidaris papillata, Leske. 



45 miles N.N.W. off Black Eock, Blacksod Bay, Co. Mayo, 

 500 fms. (St. 201) ; 35 miles N.N.W. off Black Eock, Blacksod 

 Bay, Co. Mayo, 250 fms. (St. 203) ; 40 miles N.N.W. off Achill 

 Head, 220 fms. (St. 63); 30 miles N.N.W. off Achill Head, 

 144 fms. (St. 64). 



Pboi'mosoBua islacenta, Wyv. Th. 

 54 miles off Achill Head, 500 fms. (St. 70). 



Astbenosoina bystrix, Wyv. Th. 



(Pis. XXIV. and xxv.). 



This species is, fortunately, represented by a large number 

 of specimens; fortunately, for had it been otherwise it would 



