NO. 1559. NEW RECENT UNSTALKED CRINOTDS— CLARK. . 73 



the pinnules g-raduall}" decrease in size, increasing again and becoming 



very slender distall,v. 



Color in life 3'ellowisli ])rown, the skeleton whitish, 



Tf/pe.—Cat No. 22600, U.S.N.:\I., from AIhatr<m station No. 4934; 



30° 58' 30" north latitude, 130° 32' 00" east longitude (oft' Kagoshima 



Gulf); 152-103 fathoms; August 16, 1906. 



4. ANTEDON TENELLOIDES, new species. 



Ceutro-dorsal a thick disk, bearing aljout 60 or TO slender marginal 

 cirri; these are 35 mm. long, with fifteen to seventeen greatly elon- 

 gated joints, perfect]}^ smooth, the cirrus ending in a long sharp ter- 

 minal spine. 



Second radial partially visible, the centro-dorsal usually extending 

 up to the inferior end of the axillary; the axillary is wider than 

 high; 10 arms 110 mm. long, with about 120 brachials, usually regu- 

 larly oblong throughout the arm, proportionately longer distally. 

 Syz3^gies in the third, eighth, and twelfth brachials, and distally at 

 intervals of 2 joints. 



First pinnule 14: mm. long, slender, composed of 35 to 10 short 

 joints, all of which are wider than long; second pinnule 10 mm. long, 

 with 20 joints, all but the basal 3 or 4 much longer than wide; third 

 pinnule 8 mm. long, with 15 joints, the basal 4 squarish, the rest 

 longer than wide, with a large genital gland on the fourth to the 

 eighth; following pinnules to the thirteenth essentially like the third; 

 distal pinnules 20 mm. long, very slender, with 25 to 30 elongated 

 joints. 



Color in life grayish brown, dorsal surface and cirri nearl}' white. 



Ti/pe.— Cut No. 22607, U.S.N.M.; from Alhafro.ss station No. 5092; 

 35° 04' 50" north latitude, 139° 38' IS" east longitude (Uraga Straits, 

 entrance to Tokyo Gulf); 70 fathoms; October 26, 1906. 



5. ANTEDON ASPERRIMA, new species. 



Centro-dorsal hemispherical, 9 mm. in diameter, bearing 30-70 

 (usually 50-60) cirri, the upper 50-53 mm. long with 50-60 joints short 

 and squarish at the l)ase, becoming about twice as long as wide, then 

 gradually Ijecoming square or even wider than long toward the tip; 

 the lower 25 nmi. long with 25-30 joints, not much longer than wide, 

 and stout in proportion to their length, being as thick as, or even 

 thicker than, the more elongate cirri of the upper row. The cirri are 

 not always dimorphic in this species; frequently they are all of one 

 type. 



First radials almost concealed bj^ the centro-dorsal ; second radials very 

 short and trapezoidal, about four times as wide as long; axillaries about 

 as wide as higli, equal in width to the horizontal diameter of the second- 

 brachials, with a sharp distal angle; 10 arms about 230 mm. in length, 



