NO. 1820 RECENT CRINOIDS FROM PHILIPPINES — CLARK 21'] 



everted and finely spinous distal ends, giving the arm a character- 

 istic rough feeling, much as in Catoptometra. Syzygies occur be- 

 tween the third and fourth brachials, again between the fourteenth 

 and fifteenth to forty-second and forty-third (usually in the vicinity 

 of the thirtieth) and distally at intervals of six to twelve (usually 

 seven to nine) oblique muscular articulations. 



First pinnule very slender, 12 mm. long, with 28 joints, the first 

 two about twice as broad as long, then increasing in length to the 

 fifth, ^^■hich is squarish, the remainder being slightly longer than 

 wide, increasing to about half again as long as broad distally ; second 

 pinnule 15 mm. long, very stout and stifif, with 20 to 23 joints, the 

 first two nearly twice as broad as long, the third squarish, the re- 

 mainder slightly longer than broad ; the fourth or fifth and following 

 joints have prominently everted and spinous distal edges dorsally 

 and laterally, though ventrally the joint ends are unmodified ; third 

 pinnule smooth, 6 mm. long (or one-half the length of the first), 

 small, but rather stifif, tapering evenly from the base to a slender 

 tip, with 13 joints, of which the distal are about half again as long 

 as broad; fourth pinnule similar, but only 5 mm. long; following 

 pinnules similar, but very gradually increasing in length ; distal pin- 

 nules 10 mm. long, with 20 or 21 joints, the first nearly twice as 

 broad as long, the second trapezoidal, nearly as long as its greater 

 diameter, the remainder about half again as long as broad. All the 

 pinnules are somewhat stiffened. 



Measurements. — Arms 140 mm., cirri 20 mm. to 25 mm. long. 



Color (in spirits).- — Reddish brown, the large second pinnule 

 lighter, or yellow, the remaining pinnules nearly black in their prox- 

 imal, white in their distal half; or, light blue-gray, with numerous 

 small red-brown spots ; cirri red-brown. 



Type.—CaX. No. 25441, U. S. N. M., from Albatross Station No. 

 5160: off Nusa Takbu Channel (Tataan group); 12 fathoms. 



Other specimens were obtained at Station No. 5 141 ; between 

 Bubyan and Pangasinan Islands; 29 fathoms. 



Station No. 5147; off Balinpongpong Island (south of Jolo) ; 21 

 fathoms; and Station No. 5163; south of San Gasanga (Tataan 

 group) ; 28 fathoms. 



The short, stout cirri of this species, combined with the greatly 

 enlarged second pinnule, distinguish it at a glance from all the 

 "bidistichate" species of Hiineroinctra. It is most nearly related 

 to H. bella and H. abbotti. 



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