Indian Deep-sea Dredging. 437 



five to nine. The ])latcs arc covered witli membrane, widely 

 ])laccd on wliich are beautiful forceps-like pcdicellariic. Near 

 the middle of eaeli plate is a long, stout, acute, movable spine, 

 the base of which is buried in a large, fleshy, papillose 

 eminence. 



Marginal plates distinct, clothed and armed like the abac- 

 tinals, and separated by similar groups of papulaj. 



Actinal asj)ect of the rays almost completely occupied by 

 the ambulacral groove, a single series of very narrow distant 

 ])latcs intervening between the adambulacrals and the infero- 

 marginals. The intervals between these intermediate plates 

 are filled each with a large papula, round which is a ring of 

 forceps-like pedicellaria3. 



Adambulacral plates very small, each armed with two 

 sjjines which form a double ])alisade along the margin of the 

 wide ambulacral groove. Inside this, /. e. within the ambu- 

 lacral groove, is a more or less regular row of forceps-like 

 pedicellarias. 



The mouth-plates are recognizable by their longer furrow- 

 spines. In the angle of each extremely narrow interbrachial 

 arc, behind the mouth-plate, is a crowd of pedicellarite. 



J\Iadreporiform body rather large, radially striated. 



Anal aperture indistinct. 



Tube-feet quadriserial, ending in a sucker. 



Colour in the fresh state deep orange-yellow, with large 

 chestnut-brown blotches. 



One specimen from Station 115, 188 to 220 fathoms. 



Family Pter aster idae. 



Maesipaster, Sladen. 



17. Marsipaster hirsutus, Sladen. 



Marsipaster hiisufus, Sladen, ' Challenger ' Asteroidea, p. 487, pi, Ixxviii. 

 iigs. 3 and 4, pi. ixxix. figs. 4-6. 



One small specimen with ova in the nidamental cavity. 

 Colour in the fresh state transparent hyaline grey. 

 Station 110, 1997 fathoms. 



Hymenastek, Wyville-Thomson. 



18. Hymenaster nobilis, Wyville-Thomson. 



Jfyvienaster nohilis, "Wyy.-Thoms. Joiu'n. Linn. Soc, Zool. vol. xiii. 

 p. 73, fig. 11 ; Sladen, 'Challenger' Asteroidea, p. 41*5, pi. Ixxxtu. 

 tios. 1-3. 



