228 Clark — New Genera and Species of Crinoids. 



distally; following pinnules similar, but gradually becoming longer and 

 more slender, with longer joints; the rounded-triangular condition of the 

 distal portion of the pinnules is traceable to about the end of the proxi- 

 mal third of the arm; distal pinnules about a. ."mini, long, exceedingly 

 slender, with about twenty joints, the first trapezoidal, about twice as 

 broad as long, the second trapezoidal, about as long as broad proximally, 

 the third slightly longer than broad, the remainder elongated with 

 swollen articulations, distally three times as long as broad or even some- 

 what .longer. 



Color (in spirits). — White, with small bands and patches of light 

 brown on the arms, the distal half of the cirri becoming brownish; or, 

 white, similarly marked with deep violet; or, entirely deep purple, some- 

 times with the two proximal pinnule pairs white; occasionally, brown; 

 small specimens are yellow. 



Type locality. — Singapore. 



Type, in the collection of the University of Copenhagen. 



Oligometra imbricata sp. nov. 

 Antedon cupuliferus var. Liitken MS. 



Centro-dorsal rather large, discoidal, with a large concave polar area, 

 the cirrus sockets in a single marginal row. 



Cirri xvi-x vr r, 23-28 (usually 24-21)), about 12mm. long; all the joints 

 but the terminal five or six (which are squarish) are broader than long, 

 the basal very much so'; they have prominent distal dorsal ends, showing 

 a tendency to rise into a low transverse ridge; the dorsal surface of the 

 joints is flattened; in the outer part of the cirrus a more distinct trans- 

 verse ridge is found, which gradually becomes narrower, at the same time 

 gaining in height, so that the last six or seven joints have minute median 

 dprsal spines; opposing spine prominent, hut slender, not reaching quite 

 the diameter of the penultimate joint in length; terminal claw longer 

 than the penultimate joint, strongly curved basally, but becoming nearly 

 straight distally. 



Radials even with the centro-dorsal; the costals and brachials have 

 about the same proportions as those of 0. jpulchella, and the synarthrial 

 tubercles are about as prominent as in that species, but the brachials have 

 very strongly produced and overlapping distal edges. 



P 2 much longer and stouter than 1', ; the following pinnules decrease 

 rapidly in size, remain uniform for some time, then slowly increase dis- 

 tally; the proximal joints of the lower pinnules may he more or less cari- 

 nate, and the distal joints expand somewhat from the proximal to the 

 distal end, giving the edge of the pinnule a serrated outline. 



Color (in spirits). — Grayish brown, the perisome darker. 



Type locality. — ?Tranquebar, India. 



Type, in the collection of the University of Copenhagen. 



