The Crinoids from Dr. S. Hf)rK's Hxpeditiox to Japan 1014. 119 



Charitometridse A. H. Clark. 



Crossometra A II. Clakk. 



Cr. septentrionalis A. 11. ('l\i;k. 



Fig. 77. 7S. 



Syn.: Charitoiiirtni disfiiicta | preoccupied) 1908 A. II. Clakk Proc. U. S. 

 Nat. Mus. Vol. 34. p. ;J12. 



Pachi/loinctra septentiioiitihs |!)1 1 \ ||. Clai;]; I'injo. U. S. Nut. Miis. Vol. 

 :;!t, p. 554; 1912 Clin. Iiui. Oc. p. 215; 1915 Wasii Journ. Acad. Sci. Vol. 5, p. 215. 



Crossometra S(j)tetifrio)ialis 1918 A. II. C'i.auk Siboga Exp. Vol. 42 B, p. 176. 



Frou) St. 30 = 1 spet'imeii. 



S'p. 1 (St. 30) Cd br 3 mm., ii \,:, mm., rounded conical, free dor- 

 sal surface without tubercles. 1.5 mm. C. XIX 14—10; 14 — 17 mm. 

 very coarse, in a single or double whorl and 10 rows. 5"' segment 

 the longest L=p2 br. Prom the 8"' segment a dorsal, longitudinal 

 crista. The ventral margin of the distal segments about as long as 

 the br. Opposing spine h = ^ 3 of the br of the segment. Terminal 

 claw curved, somewhat longer than the preceding segment. 



B — s projecting as large interradial prominences. R — s: h = ^js 

 br \Yith a median tubercle. I Br 1 h = \/5 br, laterally united, as on 

 the pro.ximal part of 1 Brax with a median tubercle. 1 Br 2 h = Cs br. 

 II Br — s: 4 with similar median prominences. I'rimipostaxillaries united 

 inside. Ill Br — s: 2. developed on the ituier sides. These ossicles 

 and Br 1 and 2 with still slighter median tubercles. Arms XVIII4-, 

 70 mm., strongly wall-sided out to Bi- 2. The bases of Pj, \isible be- 

 tween the arm-bases. Br 1 — 12 diseoidal, then oblique joints. C .sy- 

 zygy on the inner side usually between l!r 1 and 2. Distally with an 

 interval of 4 oblique articulations. Fxanqjlc: Br 1 —2 3 4- 4 . . . 1 1 {- 12 . . 

 Ki - 17 . . 21 -r 22 . . . The distal Br-s with a low, not o\'erlapping 

 dorsal spine. Fxample of arm-branching and regeneration: 



I Br, M 2 3 + 4, o^ 0, 7., . . 



(II 1—2 3 + 4, I Br, 1 -t-2 3 4 5,0,.. 



Ill 1- -•^' 

 1 1-2 I ' "I Br, 1 +2 3 45 0... 14,+ 15.,... 



I II 1—2 3 + 



