NO. 1561. NEW UNSTALKED CRIXOIDS— CLARK. 141 



The first pinnules are 10 mm. long-, comparatively slender, with 

 about 10 short joints, the basal 8 or 10 flattened exteriorly and rather 

 broad; the pinnule tapers rather gradually from the base to the tip; 

 the second pinnule is much shorter than the tirst and has about 23 

 joints, of which the proximal 8 or 9 are much expanded laterally; the 

 third pinnule like the second, but somewhat shorter, the C basal joints 

 even more expanded, reaching a maximum on the third or fourth, 

 then tapering toward the tip; following pinnules to the fiftieth bra- 

 chial similar, but the number of joints increasing from 12 on the 

 fourth pinnule (eighth brachial) to 20 on the pinnule on the fiftieth 

 brachial; as the great lateral ex])ansion is always confined to the first 



6 joints (reaching a maximum on the third or fourth, then gradually 

 decreasing to the sixth, which, distally, is of normal diameter) it 

 necessarily follows that the expanded joints covering the genital 

 glands progressivel}' occupy less and less of the pinnule; while in the 

 lower they take up most of its length* in that on the fiftieth brachial 

 they occupy barely the proximal thii'd; distally the pinnules are 11 

 mm. long, slender, with about 20 elongated joints. The ambulacra 

 are well plated. 



Color in life, 3'ellowish })rown. 



Type. — Cat. No. 22028, U.S.N.M.; from Albatross station No. 1918; 

 30^ 22' 00" north latitude, 129^^ 08' 30" east longitude (Eastern Sea); 

 361 fathoms; August 13, 1906. 



14. ANTEDON SCALARIS, new species. 



Centi'o-dorsal short-columnar, terminating in a stellate figure with 

 rounded angles and elevated center, bearing about its edges numerous 

 small knoblike tubercles, one at the base of each of the apical cirri. 

 Cirri stout, 20 mm. long, with 16 joints, about 20 in number, irregu- 

 larly situated in two or three rows, with all of the joints longer than 

 wide, not bearing dorsal spines. 



First radials concealed; second radials hemispherical, the curved side 

 down; axillary with the proximal border well rounded, almost a 

 semicircle; the last two joints have their lateral and posterior borders 

 produced into a thin flange; on one of the rays in the type there is a 

 fourth radial, a little more than half the size of the second, interpo- 

 lated between the second radial and the axillary. Ten arms 110 mm. 

 long, the first two brachials short, their lateral edges produced, the 

 following to the eighth irregularly quadrate, then triangular, as long 

 or rather longer than wide, becoming quadrate at the tips of the arms; 

 a syzygy in the third brachial, another in the eighth-eleventh, and dis- 

 tally at intervals of 2 or 3 joints. 



First pinnule 7 mm. long, slender, tapering, and almost flagellate, 

 with 22 squarish joints; second pinnule shorter with 15 joints, the first 



7 short and broad, the others very small; following pinnules to the 



