620 Proceedings of the Royal Irinh Academy. 



ECHINOIDEA. 



Ecliiniis esciilentus, Perm. Yery abundant at the west entrance 

 to Berehaven. E. microstoma, Wyv. Thorns. Common at Stations I. 

 and Y. ; from 80 to 120 fathoms. This species was found in great num- 

 bers by the "Porcupine" all round this region. E. miliaris, Linn., 

 Stations YIII. and IX. Echinocyamus angulosus, Leske ; extremely 

 abundant in Bantry Bay. Spatangus purpureus, Leske ; several young 

 specimens at Station YIL, and fragments from a few other places. S. 

 raschi, Lov. ; two or three specimens from Station I., and fragments 

 from Station Y. Wyville Thomson dredged this species in the first 

 cruise of the "Porcupine" 40 miles W. of Yalencia, in 110 fathoms 

 {I.e. p. 86). There is a specimen in the Science and Art Museum, 

 Dublin, from Yalencia, Co. Kerry, presented by Mr. E. Waller, and 

 another from 30 miles off Shetland. Brissopsis lyrifer, Eorbes ; 

 several ordinary sized specimens were obtained from Station YI. ; of 

 two specimens from Berehaven, 10 fathoms, one is 63 mm. (2|- inches) 

 X 56 mm. {2-^o inches, x 35 mm. (If inch). Eorbes had a specimen. 

 If inch X l-i^o" X 1 inch, but found fragments indicating larger dimen- 

 sions ; all his specimens were from the estuary of the Clyde ; mud 1 to 

 15 fathoms. So far as I can discover, .this species has only been ob- 

 tained from the W. coast in Ireland. Echinocardium flavescens, 0. E. 

 Mlill., Stations YL, YIL, and YIII. This species occurs sparingly at 

 different points round the British coasts. 



HOLOTHTJEOIDE A . 



Cucumaria pentactes, 0. F. Miill. Stations III. (No. 10), XL 

 and XII. 



sp. juv., station III. 



Thyone fusus, 0. E. Miill. Berehaven. 



raphanus, Diib. et Kor. Stations YI. (No. 20), and YIII, 



Ocnus lacteus, Eorbes. Berehaven, 10 fathoms. The only point of 

 interest lies in the specimens of Ocnus. As is well known. Profes- 

 sor Edward Eorbes recognised two species, which he called Ocnus 

 brunneus and 0. lacteus ; but a comparison of his description 

 shows that these two species diifer in nothing but colour. M. Th. 

 Barrois, in his Catalogue des Crustaces poclopMhalmaires et des 

 JEchinodermes recueillis d Concarneau (8vo., Lille, 1882, p. 51), 

 remarks that 0. brunneus has never been recorded since the time 

 of Eorbes, and that it seems but to be a colour variety of 0. 

 lacteus. Dr. Lamport, in his lately published Monograph of the 

 Holothurians, inclines to M. Barrois's view. 



