NO. 1798. CRIN0ID8 COLLECTED BY THE ALBATROSS— CLARK. 549 



becoming very obliquely wedge-shaped, half again as broad as long, 

 toward the middle of the arm as long as broad, becoming distally 

 less obliquely wedge-shaped, and terminally longer than broad. The 

 arms increase slightly in diameter to the twelfth or fourteenth 

 brachials, then slowly taper distally; the proximal third of the arm 

 is very deep and strongly compressed laterally; the outer two-thirds 

 is rather sharply rounded dorsally. After the oblong proximal 

 brachials, the distal ends of the brachials begin to project as a serrate 

 overlap which in the outer half of the arms becomes very pronounced 

 and is accompanied by a fine spinosity of the dorsal (but not lateral) 

 surface of the ossicles as in C. JcomacM. 



The pinnules are essentially as in C. JcomacM. 



The color is bright yellow. 



Type.— Cat. No. 27497, U.S.N.M., from station 5523. 



This new species is most closely related to C. JcomacM from southern 

 Japan, but the division series and oblong lower brachials are smooth, 

 without the broadly everted and roughened edges and the rounded 

 median linear tubercles of the latter, and the bare mid-radial areas 

 on the centrodorsal are much broader. 



Both these species are related to 0. woodmasoni which, however, 

 appears to differ in the greater compression of the division series 

 and consequent apparent narrowness of the lower part of the animal, 

 and in the shortness of its cirri, which are said to have 35-45 seg- 

 ments, though figured with 35 (fig. 1) and 50 (figs. 2, 3). 



Station 5Jj.2J^. — Three specimens, two with nineteen and one with 

 twenty arms 100 mm. to 110 mm. long and cirri 35 mm. to 40 mm. 

 long. These are somewhat smaller and more delicate than the type 

 specimen described, with slightly more projecting edges to the divis- 

 ion series and proximal brachials. 



Genus CROTALOMETRA. 

 CROTALOMETRA PROPINQUA, new species. 



Centrodorsal moderate in size, conical, the sides slightly convex, 5.5 

 mm. broad at the base and 4.5 mm. high, to 4.5 mm. broad at the 

 base and 3.5 mm. high, the tip somewhat truncated; cirrus sockets in 

 ten columns, two or three to a column, the columns slightly separated 

 in the mid-radial line, in close apposition interradially. 



Cirri XX, 59-64, 45 mm. to 55 mm. long, moderately stout 

 (though not nearly so stout as those of C. eupedata); first three seg- 

 ments short, becoming as long as broad on the fourth or fifth; fifth- 

 seventh (usually the sixth) a transition segment, half again as long 

 as broad; following segments gradually decreasing in length, becom- 

 ing about as long as broad on the fourteenth-sixteenth, and distally 

 twice as broad as long; shortly after the transition segment the distal 

 dorsal edge of the segments begins to become produced, rising up to 



