NO. 1G73. Ri:vEXT CRIXOIDS FROM THE PHI IJl'PlSEti—CLARK. 407 



slio'iitlv longer than broad ; the terminal joints are again about half 

 again as long as broad; distal ventral ends of the joints slightly 

 jDrominent; distal dorsal ends of the outer joints sometimes slightly 

 thickened; opposing spine minute, terminally situated, directed 

 obliquely forward, often barely indicated or altogether absent; ter- 

 minal claw nearly as long as the penultimate joint, moderately slen- 

 der and moderately curved. 



Disk completely covered with a pavement of small plates ; brachial 

 and pinnule ambulacra well plated; large irregular plates over the 

 genital glands. 



Ends of the basal rays usually visible as dorso-ventrally elongate 

 tubercles in the angles of the calyx, but sometimes quite concealed; 

 radials concealed; I Br^ usually entirely concealed in the median line, 

 slightly visible over the ends of the basal rays, sometimes visible as 

 a narrow line along the proximal border of the I Br. ; I Bro rhombic, 

 twice as brdad as long, all the sides someAvhat incurved, rising in 

 the proximal half to a large rounded tubercle; II Br 4 (3+4), rarely 

 2, in close apposition and strongly flattened laterally. 



Arms twelve to fourteen, 100 mm. long; first eight or nine brachials 

 wedge-shaped or almost oblong, about twdce as broad as long, more 

 or less tubercular, then becoming triangular, about as long as broad, 

 in the terminal portion of the arm wedge-shaped and longer than 

 broad, Syzygies occur, in arms springing direct from a I Br axillary, 

 between the third and fourth brachials, again between the fourteenth 

 and fifteenth or fifteenth and sixteenth, and distally at intervals of 

 six to sixteen oblique muscular articulations; in arms springing from 

 a II Br axillary the first syzygy is between the first and second or 

 second and third brachials. 



The pinnules resemble those of P. angiisticalyx^ but the expansion 

 of the genital pinnules is somewhat more marked. 



Color. — Yellow. 



Type. — Cat. No. 25464, U.S.N.M., from Albatross station 5230; oif 

 the eastern coast of ]\Iindanao, north of Lianza Bay ; 494 fathoms. 



Genus GLYPTOMETRA A. H. Clark. 

 GLYPTOMETRA TUBEROSA (P. H. Carpenter). 



I tentatively refer to this species a very young specimen from 

 station 5236; olf the eastern coast of Mindanao, north of Lianza 

 Bay; 404 fathoms. The lateral eversion of the I Br and lower 

 brachials is very pronounced, and the median carination characteristic 

 of tuherosa is indicated on the I Br and lower brachials; tubercles, 

 however, have not as yet appeared. This specimen is remarkable for 

 the extraordinary size of the external ends of the basal rays. 



