222 Clark — New Genera and Species of Crinoids. 



ous joints, and the absence of the swollen condition in the basal portion of 

 the arms distinguish it at once. 



Family HIMEROMETRID.E. 



Genus HIMEROMETRA A. II. dark. 



Himerometra grandis sp. nov. 



Centro-dorsal thick-discoidal, a rather small polar area bare; cirrus 

 sockets arranged in two or three crowded marginal rows. 



Cirri xxiv, 31-38 (usually 32-36), 30mm. long, rather stout; the eighth 

 to the tenth joints are squarish, the remainder not so long as broad; from 

 the eleventh onward sharp carinations are developed which may take the 

 form of small spines; opposing spine centrally or subterminally situated, 

 but short, not reaching one-half the diameter of the penultimate joint in 

 height; terminal claw somewhat longer than the penultimate joint, rather 

 abruptly curved. 



Rays and division series as in H. regalis, to which this species is must 

 closely related, but post-palmars are developed exteriorly. Forty-rive 

 arms 110mm. long, resembling those of H. regalis. 



Proximal pinnules more slender than those of H. regalis; \\ about 

 10mm. long, with twenty-six to thirty joints, slender and flagellate; P 2 

 and P 3 20mm. long, slender, though stiffer than P x with, in P 2 twenty- 

 six to thirty, in P 3 twenty to twenty-rive joints, the third squarish, after 

 the fifth rather over twice as long as broad; P 4 9mm. long, more slender 

 than Pj ; distal pinnules 10mm. long. 



Color (in spirits). — Reddish brown. 



Type locality.— 33° 10' N. hit., 12°° IS' E. long., Hirado Straits, Japan ; 

 40 fathoms. 



Type, in the collection of the University of Copenhagen. 



Himerometra molleri (Liitken MS.) sp. nov. 

 Alecto molleri Liitken MS. 



Centro-dorsal thick-discoidal, with a moderately large Hat polar area, 

 the marginal cirri in one and a partial second irregular row. 



Cirri xvi, 34-37, 20mm. long, moderately stout, all the joints subequal, 

 about twice as broad as long, very slightly shorter basally, very slightly 

 longer distally, the sixth and following bearing small sharp-pointed median 

 dorsal spines; opposing spine rising from entire dorsal surface of penulti- 

 mate joint, blunt, not reaching in height one-third the diameter of that 

 joint, the apex median or sub-terminal in position ; terminal claw longer 

 than penultimate joint, stout, slightly curved. 



Costals and lower brachials deep, in close apposition, laterally flattened 

 ("wall-sided"); brachials as in H. milberti; synarthrial tubercles promi- 

 nent, hut small; ten arms about L15mm. long. 



I*, LOmm. long, slender, flagellate, with eighteen joints ; I' 2 15mm. long, 

 much stouter, with twenty-one joints, the first two not quite so long as 



