Indian Deep-sea Astevoidea. 99 



Actinal intcrradial areas small, semielllptical in shape, 

 reacliing- to the third inf'cro-niargiiial ])late ; about thirty 

 plates ill each area, of which those in the row nearest the 

 anibulacrum are imicli the largest; all the plates are closely 

 covered with ])iisma(ic granules, grouped, except in the 

 particularly large adoral pair of plates, in paxilhv-fonn. 



Anus central but indistinct. Madreporiforin plate almost 

 completely hidden, rather nearer to the marginal plates than 

 to the centre. 



Ainbiilacral i'urrow narrow. 



Colour in the fresh state light pink. 



Laccadive iSea, 740 fathoms, coral-mud. 



This species appears to be closely related to Astrofjonium 

 faUax, Perrier (Ann. Sci. Nat. tom. xix., 1885). Guided by 

 the work of Mr. Sladen and by the description and figures in 

 the ' Boston Journal of Natural History,' vol. vi., 1857, 

 p. 530, pi. xxiii., I have placed it, though not without 

 misgiving, in Stiinpson's Pacific genus. 



xVnthexoides, Perrier. 



34. Anthenoides sarissa, sp. n. 



Rays 5. Jx = 2'5 r. R = 46 millim. in the 

 type specimen. 



Disk large, flexible, inflatable, especially in tlie intcrradial 

 areas ; rays moderately long, rigid, broad at base, but quickly 

 becoming narrow and then tapering. 



The abactinal surface of the disk and of the rays, except 

 at the extreme tip, where the supero-raarginal plates meet 

 across, is cased by Hat plates which are covered with a finely 

 and distantly granulose membrane ; these plates are of two 

 kinds and of two modes of disposition : — (i.) large stellate or 

 somewhat polygonal plates arranged in series radiating from 

 the centre of the disk, and (ii.) small or minute platelets inlaid 

 everywhere between the large plates. Papulse emerge in the 

 seams between the plates everywhere except in a narrow band 

 in each interradius. 



The marginal plates, which number about 20 in each 

 series, are large and finely and distantly granular. The 

 supero-marginals form a very broad bevelled margin to the 

 disk in the interradii and a narrower margin to the rays, 

 except in the distal third of the latter, where they nearly meet 

 across the ray ; except for one, two, or three small inconstant 

 papilliform pedicel lariiv; occurring on the extreme distal edge 



