Indian Deejj-sea Dredging. 429 



plates sliort, broarl, tumid, cacli plate edged with about seven 

 Sj)iiiclctSj wliicli increase in length from periphery to centre, 

 and armed actinally with about six unequal irregular spinelets. 



Actinal intcrradial areas small, the plates covered with 

 ca])illary spinelets ; there are one or two inconspicuous multi- 

 valve pedicellaria} in each area. (Similar pediceUaria^, but 

 smaller, occur in the interbrachial arcs between the supero- 

 and infero-marginal ))lates. 



Anal aperture subcentral, surrounded by paxilla3 with long 

 central spinelets, which form a close palisade. 



Papularia compact, well-defined, tumid, each with from 

 12 to 16 very close-set papula3. 



Madreporiform body small, round, convex, situated close to 

 the margin of the disk, with a single large paxilla to its 

 central side. 



Colour in the fresh state uniform pale orange-pink. 



Station 106, 1091 fathoms, and Station 108, 1043 fathoms; 

 numerous specimens, of all stages of growth. 



Dytaster, Sladen. 



3. Dytaster e.viUs, Sladen. 



Dytaster cdliSy Sladen, * Challenger ' Asteroidea, p. 65, pi. ii. figs. 3 

 and 4. 



Several specimens from Station 117, 1748 fathoms, and 

 Station 118, 1803 fathoms. This species was also dredged 

 in the year 1888 in the Bay of Bengal in 1924 fathoms. 



Colour in the fresh state salmon-pink. 



4. Dytaster anacanthuSj sp. n. 

 Rays 5. E,= 6'25 r. 



Disk small, in-egularly inflated ; rays long and tapering ; 

 interbrachial arcs rather acute. 



Abactinal surface densely crowded with paxillaj formed of 

 narrow tabulte surmounted by close-set granules ; those in the 

 centre of the disk and in a narrow band along the middle of 

 each ray are smaller than elsewhere. 



The supero-marginal plates, about 45 in number, are 

 entirely vertical and lateral, and are uniformly covered with 

 papilliform granules without any large spines or tubercles. 

 The infero-marginal plates correspond in number and arrange- 

 ment with the supero-marginals, which are exactly super- 

 posed ; they are uniformly covered with papilliform granules 

 Ann. & ^fog. N. Hist. Ser. 6. Vol. viii. 30 



