NO. 1820 RECENT CRINOIDS FROM PHILIPPINES — CLARK 219 



later gradually increasing in length; distal pinnules 10 mm. long, 

 with about 20 joints, the first two not so long as broad, the third 

 squarish, the remainder about one-third longer than broad, becom- 

 ing half again as long as broad distally. 



Measurements. — Arms no mm., cirri 25 mm. in length. 



Color (in spirits). — Dull yellowish, the division-series and arms 

 thickly covered with small dull red spots and blotches; perisome 

 brown. 



Type. — Cat. No. 25442, U: S. N. M., from Albatross Station No. 

 5147; off Balinpongpong Island (south of Jolo) ; 21 fathoms. 



The length of the second pinnule, which has comparatively few 

 joints, and the similarity of the first to the second, place this species 

 near H. tenuipinna; but the greater number of joints in the lower 

 pinnules, and the fact that the first eight or nine instead of only the 

 first three are similar in character, distinguish it at once. 



HIMEROMETRA GRACILIPES, new species 



Centro-dorsal a thick disk with a small flat polar area, the cirri 

 arranged in two, and a partial third, more or less alternating 

 crowded irregular rows. 



Cirri xix, 41-52 (usually about 50) ; first joint about twice as 

 broad as long, following increasing in length to the fifth or sixth, 

 which is squarish, then remaining the same (or becoming slightly 

 longer than broad) to about the twenty-sixth, then gradually becom- 

 ing shorter, about half again as broad as long; after the twentieth 

 to the twenty-second dorsal spines gradually begin to develop, 

 which, however, never become very large ; opposing spine terminal, 

 erect, about half as long as the diameter of the penultimate joint; 

 terminal claw longer than the penultimate joint, slender, moderately 

 curved. 



Radials very prominent, their external dorsal surface parallel with 

 the dorso-ventral axis of the animal, about twice as broad as long; 

 each radial bears a low rounded postero-Iateral tubercle on each 

 side ; first costals trapezoidal, about three times as broad as long 

 proximally and twice as broad as long distally; they are basally 

 united, but diverge very rapidly distally; costal axillaries pen- 

 tagonal, about one and one-half times as broad as long; distichals, 

 palmars, and post-palmars 2, widely separated, the last developed 

 only on the outer side of the distichal series. Forty-four arms in 

 the type ; first ten brachials oblong, not quite twice as broad as long, 

 then wedge-shaped, almost triangular, about twice as broad as long, 

 becoming proportionately longer in the distal part of the arms. 



