109 



The centrodorsal is large, thick discoidal, the dorsal pole slightly convex, 2 mm. in 

 diameter; the cirrus sockets are arranged in two closely crowded and irregular alternating rows. 



The cirri are XXI, 25 — 27, 20 mm. long, long and rather slender, with a slight distal 

 taper; the first segment is short, the second longer, the third nearly as long as broad, the 

 fourth slightly longer than broad, the sixth and following twice as long as broad; after the 

 tenth the segments slovvly decrease in length so that the last four or five before the penullimate 

 are about as long as broad to one third again as long as broad; the last eleven or twelve 

 bear a slight distal dorsal carination which is low and rises very gradually from the dorsal 

 surface of the segment, but ends rather abruptly distally; it is so slight that the cirri appear 

 practically smooth ; the opposing spine is moderate in size, triangular, arising from the entire 

 dorsal surface of the penultimate segment, terminal, and directed obliquely forward; the distal 

 ends of the cirrus segments are slightly prominent. 



The radials are almost entirely concealed by the centrodorsal, being only slightly visible 

 in the interradial angles; IBrj very short, almost oblong, five or six times as broad as long; 

 axillaries very short, nearly or quite three times as broad as long; IIBr and IIIBr 2, the latter 

 external; sides of the elements of the division series in close apposition and sharply flattened. 

 The proximal edge of the IBi^ is everted and slightly scalloped; the outer edges of the axil- 

 laries are slightly thickened and everted, but smooth; the lateral third of the exposed surface 

 of both ossicles taken together bears from a dozen to a dozen and a half prominent well 

 rounded and entirely separate tubercles, some of which may be more or less elongate in one 

 diameter; between the tubercular lateral and smooth dorsal surface of the elements of the IBr 

 series there is a more or less marked prominent beaded ridge or row of tubercles which, 

 however, may be absent; the sides of the ossicles of the IIBr series are modified in the same 

 way as those ot the ossicles of the IBr series, but not so extensively. 



The arms are about 26 in number, 75 mm. long; the proximal outer angle of the first 

 brachial is roughened for some distance inward, and sometimes is more or less tuberculated •, 

 there is a similar modification of the surface of the second brachial, but it is much less extensive; 

 the synarthrial tubercles are small, but rather prominent; the distal edge of the brachials is 

 only very slightly produced. 



Pj is 7 mm. long with 21 segments, tapering rather rapidly in the proximal fourth, 

 slender from that point onward; most of the segments are about twice as long as broad. P 3 is 

 8 mm. long with 17 — 20 segments of which the first is nearly twice as broad as long, the 

 second nearly as long as broad, the third one third again as long as broad, and the remainder 

 about twice as long as broad ; the second-fifth are narrowly carinate ; the pinnule is basally 

 little, if at all, larger than P lt but it tapers less rapidly, and is slightly less slender distally. 

 P., is 12 mm. long with 16 — 18 segments, slightly stiffened like P., in Lamprometra protcc1us\ 

 it tapers evenly from the base to the tip, and 's larger and stouter than P a , the latter more 

 nearly resembling P, : the proportions of the individual segments is as in P 2 ; the second-fourth 

 have a slight narrow carination. P 4 is similar to P 3 ; it is 9 mm. long with about 16 segments, 

 larger, longer and stouter than P 3 , and stiffened like P.,. P. is from 4.5 mm. to 5 mm. long 

 with 1 5 segments, small and weak, evenly tapering and becoming very slender distally ; the 



