NO. 1561. NEW VNSTALKED CRINOIDS— CLARK. 147 



twice as lono- as wide; the pinnule on the fourth brachial (second pin- 

 nule) is similar, and a))out the same size, usuall}- slightly shorter, 

 rarel}^ somewhat longer: the next few pinnules decrease in lengtii, the 

 distal pinnules becoming longer again and very slender, with al)out 20 

 elongated joints. 



Color in life rich reddish purple, spotted and blotched with white; 

 the radials and lower brachials are white, the tubercles purple, the 

 radials with narrow purple transverse lines; cirri white, banded with 

 purple. Younger examples are lighter in color, very small ones being 

 nearly all white. 



Type.—OAi. No. 22640, U.S.N.M.; irom Alhatro.ss station No. 4947; 

 31'- 28' 20" north latitude; 130° 35' 30" east longitude (oft' the southern 

 shore of Nipon); 51 fathoms; August 20, lt>06. 



23. ANTEDON TIGRINA, new species. 



Centro-dorsal discoidal, much smaller than the disk, bearing 25-30 

 marginal cirri in a single irregular row; the cirri are 10 mm. long, with 

 about 20 short joints, of which the distal half bear small paired spines, 

 which )>ecome single near the tip. 



First radials concealed, or barel}" visible; second radials over twice 

 as wide as high, oblong, well separated laterally; axillaries pentagonal, 

 alow, rounded tubercle at the junction of the axillary and second radial. 

 Ten arms, reaching 50 mm. in length in the largest specimen; first 6 

 brachials oblong (except the third, which is almost square) about twice 

 as wide as high; the next two or three quadrate, the following trian- 

 gular, becoming quadrate and elongate distal!}^ ; distal edges of brachials 

 finely serrate, and turned outward and slightly backward; syzygies 

 in the third, eighth, and twefth brachials, and distally at intervals of 

 4-9 joints. 



First pinnule (on second brachial) about 5 mm. long, slender, with 

 13 joints, the first 3 or 4 squarish, the others longer than wide; the 

 third brachial has no pinnule; second pinnule (on fourth brachial) 

 about 10 mm. long, with 20 joints, the first 2 about as long as wide, 

 the others elongated; following 3 or 4 pinnules decrease rapidl}' in 

 length; the distal pinnules are 9 or 10 mm. long, slender, with 20-25 

 joints, not greatly elongated; the joints of the lower pinnules are 

 slightly expanded distall} , with finely serrate margins; the first 5 or 

 (5 pairs of pinnules are very stilf. 



Color (in spirits) whitish, the brachials broadly edged with deep red- 

 dish brown; radials and first 6 or 7 brachials purple, with a median 

 band of white; lower pinnules white, purple, or banded, the distal pin- 

 nules usually purplish or reddish brown; cirri light purplish. 



Type. (Silt. No. 22642, U.S.N.M.;? Kagoshima Bay, Japan; the 

 19 specimens of this species were obtained by the United States North 



