80 Clark — Six New East Indian Crinoids. 



Pi is 9 mm. or 10 mm. long, slender and evenly tapering, with from 

 twenty-six to thirty-one segments all of which are much broader than 

 long; P2 is similar, very slightly stouter, of the same length or very 

 slightly longer, with twenty-five segments of which the outermost are 

 about as long as broad; Pais 11 mm. long with twenty-two segments, 

 resembling P2, but with the segments in the distal half about as long as 

 broad; P4 is 11 mm. long with twenty segments which become about as 

 long as broad on the fifth or sixth and slightly longer than broad termi- 

 nally; P5 is 9 mm. long with fifteen segments, most of which are about 

 as long as broad; Pg is 8 mm. long with fourteen segments; P9 is 7 mm. 

 long with thirteen segments; in the genital pinnules the third-seventh 

 segments are just perceptibly broader than those ifollowing; the distal 

 pinnules are very slender, 10 mm. long with twenty segments. 



Type locality.— " Siboga " Station No. 1.6(5. 



Glyptometra timorensis sp. nov. 



This new species is nearest to G. lata of southern Japan, but the cirri 

 are shorter and slightly stouter, with shorter segments, and the ornamen- 

 tation of the ossicles of the iBr series and of the proximal brachials is 

 much more smooth and regular; there is none of the coarsely tubercular 

 rugosity characteristic of G. lata. 



The centrodorsal is very thick discojdal, the sides sloping slightly in- 

 ward, 6.5 mm. in diameter at the base and :! mm. high ; the cirrus sockets 

 are arranged in ten columns of two each, the columns being closely 

 crowded against each other and showing no differentiation into pairs. 



The cirri are xx, 17-20, 20 mm. to 25 mm. long, stout; the first seg- 

 ment is very short, the following gradually increasing in length to about 

 the seventh, which, with the following, is about twice as broad as the 

 median length, or, in the longest cirri, half again as broad as the median 

 length ; the dorsal profile of the segments beyond the seventh or eighth is 

 convex, becoming gradually more strongly so toward the end of the cirri. 



The ends of the basal rays are visible as flat triangular or irregular areas 

 in the angles of the calyx; the radials are entirely concealed or are 

 slightly visible as small irregular tubercles or flat irregular areas in the 

 angles of the calyx; the 1 Bn are short, broadly chevron-shaped, the 

 proximal and distal borders parallel, about four times as broad as long; 

 the proximal edge is produced into a thin border overlapping and con- 

 cealing the proximal portion of the centrodorsal, though flush with its 

 general surface; the border of this produced proximal edge is usually 

 irregularly scalloped or bears a few low coarse teeth, though it may be 

 nearly plain; it sometimes bears a few low tubercles; it may be evenly 

 curved, becoming horizontal just over the ends of the basal rays, or it 

 may be regularly curved in its lateral thirds but nearly straight in its 

 median third; the middle of the dorsal surface of the 1 Bn is occupied by 

 a large prominent broadly oval well rounded tubercle; the axillaries 

 are broadly rhombic with the lateral angles truncated so that the lateral 

 edges are from one half to two thirds the length of the sides of the iBn, 



