258 Proceedings of the Royal Irisli Acadeini/. 



OpMothrix lUtkeni, Wyv. Thomson. 



iv. "Porcupine" Exp. 1869, 180 fms. (Thomson '73): E. I. A. 

 Exp. 1885, 80 fms., two specimens (Haddon '86b) : R. I. A. 

 Exp. 1886, 93-160 fms. (Haddon '88) : " Plying Eox " Exp. 

 1889, 200-315 fms. (Bell' '89, '92b): H. M. S. "Research" 

 1889, 200 fms. (Bell '90 sub 0. pentaphjllum, '92 b) : 

 E. D. S. Fish. Survey 1891, off Bolus Head, 115 fms. and 220 

 fms. (Bell '92). 

 Distribution. — S. "W. Ireland. Azores " Challenger." 



STBEPTOPHnJIl.E. 



[Ophiobyrsa hystricis, Lyman.] 



. . . iv., v., . 



iv. H. M. S. "Eesearch" 1889, 400 fms., one specimen (Bell '90) : 

 ?E. I. A. Exp. 1888, 345 fms., fragments of rays only (Sladen 

 '91) : " Flying Fox " Exp. 1889, one specimen, 315 fms. (Bell 

 '92a). 

 V. E. D. S. Fish. Sui-vcy 1890, off Achill Head, 220 fms., a young 

 form, which mav, perhaps, be referred to this species (Bell 

 '92). 

 Distrihution. — Faroe Channel and off western coasts of Ireland. 

 Deep "water. 



ECHINOIDEA. 



Family — CiD.iKiD.i:. 

 Cidaris papillata, Leske. 



• ii-, • iv., [v.], [vi.] 



ii. "Porcupine" Exp., off Wexford, 30-40 fms. (Bell '92b). 



iv., [v.], [vi.] Generally distributed in the deep-water marine area 

 off the western coasts of Ireland, and in some places very 

 abundant. Dredged in 93 fms. in E. I. A. Exp. 1886 

 (Haddon '88). 

 Distrihution. — Atlantic and Pacific Oceans, 



