KO. 1798. CRIXOIDS COLLECTED BY THE ALBATROSS— CLARK. 555^ 



Cirri XX, 19-23, about 35 mm. long, very stout, in lateral view 

 increasing considerably in diameter in the outer portion; first seg- 

 ment short, twice as broad as long, the following gradually increasing 

 in length to the fourth, which is about as broad as long; following 

 similar, the terminal becoming slightly broader than long; the 

 penultimate segment is of less diameter than those immediately pre- 

 ceding, half again as long as broad; on the fourth or fifth segment the 

 dorsal surface becomes rounded carinate, this carination slowly 

 becoming higher and sharper, on the distal ten or twelve standing out 

 as a high narrow sharp keel, the distal apex of which, in lateral view, 

 is seen to be parallel to the axes of the segments; the opposing spine 

 is small, but prominent, terminal in position. 



Ends of the basal rays very prominent in the interradial angles; 

 radials concealed; IBr^ very short, crescentric, the lateral ends 

 thickened and more or less everted, the proximal edge thickened and 

 more or less tubercular or crenulate ; a rather high, strongly rounded, 

 doreo vent rally elongate tubercle occupies the median dorsal line; 

 IBr, triangular, twice as broad as long, \\'ith a high median tubercle 

 resembling that on the IBri, the anterior (distal) portion of which 

 bends to one side or the other, reaching almost or quite to the base 

 of the IIBrj; nine of the IIBr series 4 (3 + 4), one 2, strongly and 

 evenly convex dorsally; the two distal components are slightly 

 separated interradially by the carinate basal segments of P^; the 

 ossicles of the IIBr series bear rounded median tubercles similar to 

 those on the IBr series, but somewhat less high; IIIBr 2 (1+2), 

 developed internally in 1, 2, 2, 1 order; two IVBr 2 (1+2) series are 

 present, one internal in reference to the preceding IIIBr series, the 

 other internal in reference to the preceding IIBr series. The lower 

 part of the animal is broad and stout and broadly rounded, so that 

 the profile resembles in general that of the larger species of Crino- 

 metra. 



Thirty-three arms 130 mm. long; the proximal oblong brachials 

 have a slight trace of a low median tubercle; the outer brachials 

 overlap slightly. 



Type. — Cat. Xo. 27502, U.S.X.M., from southern Japan, the original 

 label reading "Sagami Bay." 



PACHYLOMETRA DISTINCTA (P. H. Carpenter). 



Station 5510. — Four specimens; one has twenty-one arms 130 mm. 

 long and cirri 20 mm. to 25 mm. long; another has twentj'-nine arms, 

 the IIIBr series being 2 (1+2), internally developed; the third has 

 twenty-four arms. 



Station 5536. — One fine specimen with twenty-three arms 160 mm. 

 long and cirri XXVI, 19-24, 23 mm. to 25 mm. long; all the IIBr 

 series are 4 (3 + 4); the three IIIBr series are 2 (1+2), developed 

 internally. The genital pinnules bear eggs. 



