430 Messrs. J. Wood-Mason and A. Alcock on 



and bear medially, except in the peripheral third of the ray, 

 each a long- adpressed styliform spine. 



Adanibulacral plates rather long, each with a furrow-series 

 of six obtuse spinelets, and with a mass of small spinelets, 

 ■which form often three longitudinal series^ actinally. Mouth- 

 plates large, prominent, the suture between each pair widely 

 open ; the innermost mouth -spine of each plate much enlarged ; 

 actinally each plate is covered with numerous small spinelets 

 in about three longitudinal series. 



Actinal interradial areas small, the plates covered with 

 small papiiliform spinelets. 



Madreporiform body situated near the margin of the disk 

 and almost entirely concealed by paxillse. 



Anal ajjerture small, central. 



Colour in the fresh state uniform light rose-madder. 



Station 117, 1748 fathoms. 



Persephon ASTER, gen. nov. 



Allied to Plutonaster^ Sladen. 



Disk rather large, flat ; rays rigid. 



Marginal plates more or less covered with papiiliform 

 spinelets, and bearing each one or more strong rigid spines ; 

 the supero-marginals, which form a broad massive border on 

 the abactinal surface of the ray, directly superposed on the 

 infero-marginals, plate to plate. 



Abactinal area with close-set paxilla3, which on the rays 

 are arranged in transverse rows without any definite median 

 series ; papulae distributed everywhere between the paxillee. 



Actinal interradial areas large, with intermediate plates 

 extending far along the ray. 



The adambulacral plates bear a furrow-series of obtuse, 

 compressed, sliglitly radiating spinelets, and actinally two or 

 more longitudinal series of papiiliform spinelets. 



Madreporiform body small, rather concealed, situated 

 distant from the margin of the disk. 



Anal aperture subcentral. 



No pedicellariffi. 



5. P ersephonaster croceus, sp. n. 



Plutonosier, sp., Wood-iMason aud Alcock, Ann. & Mag. Nat. Hist. 

 189], vii.p. l.-i. 



Rays 5. R = 4-5 r. 

 Eays moderately long, rigid. 



