NEW VNSTALKED CRIXOIDS— CLARK. 139 



II. ANTEDON PUBESCENS, new species. 



Centro-dorsal rather small, blimtl}- conical, with 10 vertical rows of 

 cirrus sockets, usually 8 in a row; cirri 25 to 30 in number, slender, 

 30 mm. long, with 50 to 55 joints, the basal 10 or 12 longer than wide, 

 distalh" developing rather low dorsal spines. 



Basals and first radials just visible in the angles of the cal3"x, the 

 former as small tubercles; second i-adials short and band-like, sharply 

 carinate, with raised and serrate edges; axillaries low and wide, a 

 sharp keel in the posterior half. Ten arms, 80 mm. long, the first 6 

 or 7 brachials oblong, the rest quadrate, becoming elongate distally; 

 syzygies in the third l)rachials, again about the fourteenth, and distall}^ 

 at intervals of 2, 3, or 4 joints. 



First pinnule 7 mm. long, with 21 or more short joints, the basal 4 

 or 5 of which are produced dorsally into a broad thin keel; all the 

 joints have their edges armed with bunches of very fine spines; second 

 pinnule 5 mm. long, with 10 joints, the basal 3 or 4 of which have a 

 thin dorsal keel which, however, is not nearly so wide as that on the 

 first pinnule; the first and second pinnules are somewhat flattened 

 laterally; the three following pinnules are in general similar to the 

 second, but more slender; the next 3 or -l pairs have the third to 

 sixth joints laterally expanded, covering the genital glands, after which 

 the pinnules become slender and more elongated, reaching a length 

 of 8 nun. with 15 joints. 



The radials and lower brachials are covered with numerous and 

 thick-set very fine spines, which become less apparent after about 

 the tenth brachial, after which the joints develop an overlapping 

 border of very fine teeth, and longitudinal striations, which last, on 

 the distal brachials, become more pronounced, and break up on the 

 outer portion of the joints into numerous fine spines. 



Color in life, light yellow. 



Ti/jje.—Csit No. 22631, U.S.N.M.; from .1M./?'/yav.v station No. 4919; 

 30^ 34' 00" north latitude, 129° 19' 30" east longitude (Eastern Sea); 

 440 fathoms; August 13, 1906. 



12. ANTEDON HEPBURNIANA/' new species. 



Centro-dorsal low-hemispherical with a rough dorsal pole, but 

 without interradial processes, bearing about 10 marginal cirri; these 

 are 7 mm. long, usually in a single row, and consist of about 10 stout 

 joints which do not develop a dorsal spine. 



Basals visible as interradial tubercles. 



First radials short and band-like, with curved borders, the lateral 

 edges raised into a blunt tubercle; second radials longer, about four 



a I take great pleasure in dedicating this species to Lieut. Arthur J.Hepburn, 

 U. S. N., to whom is largely due the success attending the recent cruise of the 

 Albatross in the north Pacific. 



