A. H. CLARK : THE CRINOrDS OF THE INDIAN OCEAN. 85 



his figures of specimens supposedly of tlmt species fig. 4 oliviouslv represents 

 Comastcr iiniltifidd. 



COMASTER TAVIANA, sp. nov. 



Description. — Centrodorsal discoidal, broad, the polar area fiat, 5 mm. in 

 diameter ; cirrus sockets arranged in a single crowded, somewhat irregular, 

 marginal row. 



Cirri XX-XXII, 10-18, moderately slender. 13 mm. to lo mm. long; fir.st 

 two segments about twice as broad as long, third slightly longer than broad, 

 fourth , seventh or eighth half again as long as broad, the following gradually 

 decreasing in length , the terminal seven or eight being about one third again as 

 broad as long ; ninth a transition segment, rounded in cross section and with a 

 dull surface like the preceding in the proximal three-fourths, polished like the 

 succeeding in the distal fourth ; following the transition segment the segments 

 become rather strongly compressed laterally, so that in a lateral view the cirrus 

 appears to thicken from this point onward ; transition and following segments 

 with the distal dorsal edge produced, this production rapidly becoming more 

 sharply rounded, and soon yy-shaped, the segments at the same time becoming 

 distally more carinate dorsaliy, so that the later segments are provided with a 

 small but sharp sub-terminal tubercle ; in addition, the segments from the 

 eleventh or twelfth onward have, just before their middle, a second, more rounded 

 median dorsal tubercle, not quite so high as that in the distal portion, present- 

 ing, therefore, the same appearance as the cirrus segments of Oligometra adeonce; 

 opposing spine represented by a small median tubercle arising from the entire 

 dorsal surface of the penultimate segment, the apex usually forming in lateral 

 view slightly more than a right angle, though occasionally more sharp ; terminal 

 claw somewhat longer than the penultimate segment, stout basally Imt becoming 

 more slender distally, moderately curved. 



Ends of the basal rays visible as small tubercles in the angles of the calyx ; 

 radials only slightly visible in the angles of the calyx, over the ends of the bfisal 

 rays, IBr, very short and broad, more or less (sometimes wholly) concealed by 

 the centrodorsal. just in contact basally but diverging distally ; IBr.^ broadly 

 pentagonal, almost triangular, twice as broad as long, or even somewhat broader ; 

 IIBr 4 {3-f-4); IIIBr 2; IVBr 2, but irregular in occurrence; division series 

 free laterally though not widely separated, rounded dorsally, but not especially 

 convex. 



Thirty-six arms about 100 mm. long; first brachial short, wedge-shaped, 

 almost entirely united interiorly, twice as broad as its interior length or slightly 

 broader ; second brachial similar, but slightly larger ; third and fourth (syzygial 

 pair) not quite so long as broad ; next two brachials oblong, about twice as broad 

 as long, then becoming triangular, about half again as broad as long, after the 

 end of the proximal third of the arm gradually becoming wedge- .shaped, and in 

 the terminal portion wedge-shaped, about as long as broad ; fourth and follow- 



