138 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxiii. 



First pinnule the longest, about 5 mm. long with 8-10 stout squarish 

 joints, the first much expanded; following pinnules decrease in length 

 to the lifth, after which they gradually increase distally, becoming 

 much more slender, reaching a length of 8 mm. with 15-18 joints. 

 The radials, first 3 or 1 brachials (including the first two pinnules), are 

 flattened laterally. 



Color in life bright yellow, sometimes banded with white; cirri 

 white, with a few narrow bands of yellow. 



2}/j>d.— Cat. No. 22632, U.S.N.M.; from Albatross station No. 4903; 

 32^ 31' 10" north latitude, 128° 33' 20" east longitude (Eastern Sea); 

 139-107 fathoms; August 10, 1906. 



lo. ANTEDON VILLOSA, new species. 



Centro-dorsal bluntly conical, the cirri arranged in 15 vertical rows, 



3 in each interradius, 2 or 3 cirri in each row, making 10-15 in all; 

 the cirri about the basal part of the centro-dorsal are 33 mm. long 

 with 50 joints, the fourth-eleventh longer than wide, the remainder 

 rather short; all but the basal 6 or 7 bear dorsal spines, which become 

 more prominent distally; the apical cirri are usually somewhat shorter 

 and stouter, with 30-40 joints; the bare apical portion of the centro- 

 dorsal has 5 interradial ridges, and is thickly covered with fine hair-like 

 spines. 



The basals are visible as small tubercles at the angles of the calyx; 

 first radials just visible, very narrow and crescentic; second radials 

 short, about three times as wide as high; axillaries widely pentagonal, 

 and wider than high. Ten (in one example eleven, bidistichate) arms 

 95 mm. long, with 90-110 joints, the first 10 oblong, then quadrate, 

 becoming more elongate distall}-; a syzj^gy in the third brachial, 

 another about the sixteenth or eighteenth, and others distally at inter- 

 vals of 4-8 joints. 



First pinnule 10 mm. long, very stout, with 20 short joints, tapering 

 gradually from the base to the tip, and flattened on the outer side; 

 second pinnule 7 mm. long, with 15 joints, much more slender than the 

 first; the following pinnules about 6 mm. long, with 13 or 14 joints; 

 distal pinnules 14 mm. long, stout, carinate, with about 22 joints, the 

 basal half of which are squarish, the rest elongate; pinnule ambulacra 

 plated. The radials and 4 or 5 lower brachials are thickly set with 

 fine hair-like spines; pinnule joints strongly overlapping and with the 

 distal edges set with spines; arm joints with both the proximal and 

 distal edges turned outward and furnished with spines. 



Color in life bright yellow, the centro-dorsal, radials, and lower 



4 or 5 brachials dark greenish; cirri j^ellow. 



Type.—Q^X. No. 22630, U.S.N.M.; from Alhatross station No. 4780; 

 52^ 01' 00" north latitude, 174" 39' 00" east longitude (western Bering 

 Sea); 1,046 fathoms; June 7, 1906. 



