NO. 1561. NEW UNSTALKED CRINOIDS— CLARK. 149 



First pinnule 5 mm. long, with 20 squarish joints, tapering evenly 

 from the base; second pinnule 12 mm. long, veiy stout, with 20 short 

 joints; following pinnules rather smaller than the tirst, becoming 

 elongate distally. 



Color (in spirits) dark purplish brown, cirri and second pair of 

 pinnules lighter and yellowish. 



Ti/jx'.— Cut. No. 22644, U.S.N.M.; froiu Pulo Taya, China Sea; 

 obtained in July, 18!»!>, by Dr. W. L. Al)bott. 



26. ANTEDON STYLIFER, new species. 



Centro-dorsal hemispherical, bare at the pole, with 30 cirri; cirri 

 20 mm. long, with 30 joiuts, very slightly longer than wide, remark- 

 ably uniform in size; there are no dorsal nor opposing spines. 



First radials just visible; the second short, in close contpct laterally, 

 and less than half the height of the irregularl}- rhombic axillary; tirst 

 distichal oblong, a))Out two and one-half times as wide as high, the axil- 

 laiy triangular, about half as high as wide; the junction between the 

 2 outer radials and the 2 distichals is elevated into a low tubercle; the 

 radials, distichals, and first brachials are in close contact laterally. 

 Nineteen arms TO mm. long, with about 150 joints, the first 8 ol)long, 

 then triangular (much wider than high) to the fortieth brachial, after 

 which they become irregularl}' oblong; s3"Z3'gies in the third brachials, 

 again about the twelfth, and distally at intervals of about 4 joints; the 

 lower brachials are slightly tubercular, tuid all the brachials have 

 slightl}' overlapping edges. 



First piniuilo 8 mm. long, rather slender, with 10 moderately elon- 

 gated joints; second pinnule 11 mm. long, with 17 joints, stouter than 

 the first; third pinnule 15 mm. long, stout, stiti", and rigid, with 16 

 long cj^lindrical joints; this pinnule is much stouter and stiti'er than 

 any of the others; fourth pinnule 10 mm. long, fifth 7 mm. long; distal 

 pinnules 8 mm. long, with about 20 joints, tapering gradually from the 

 base to the point. 



Color in life purple, the skeleton and cirri light brownish yellow. 



Ti/pe.— Cat. No. 22645, U.S.N.M.; from Alhairos.^ station No. 

 4929; 30^ 12' 30" north latitude, 130° 43' 00" east longitude (Eastern 

 Sea); 84 fathoms; August 15, 1906. . 



27. ANTEDON DELICATISSIMA, new species. 



Centro-dorsal low-hemispherical, a large area at the pole bare, 

 bearing about 30 marginal cirri; these are 30 mm. long, with 40 joints, 

 much elongated basally, short distally, none of them bearing dorsal 

 spines. 



