The Crinoids from Dr. S. Bock's Expedition to Japan 1'.M4. 7!) 



ueding segment. The lii-st segments proximally st)me\vlia( nanower, 

 and thei-efoi'e a rather serrate proximal protile. 



K —s nari-o\v bands. 1 l!r 1 h = '4 br. hiterally fi-ee. Axilhuy 

 h = '4 br. Br I h= ' 2 br, basally nnited inside. Anns \, 2') nun. 

 Syzygies with an interval of 3 — 4 (tl)rK|ne articulations. Distal Br-scg- 

 ments L = 1 ' 2 bi'. snioolli. 



P, ()— 7: 2 nun. B,. — 10; 4 mm. P3 7—8; 2,:. mm. B, lacking, 

 B|, S>: 2.5 mm. (;$' ami the following segments L = 2—3 x br, smooth). 

 Distal p. + '^^ "'"'• 



Disk thrown off. Colour; \iolet spots on a wliite ground. 



A young specimen of Culobometridd'. probaljly referable to this 

 species, is also: 



"^ Sp. 3 (St. 12) Cd discoidal. br 1.:, nun. - C. X 10-18: 5,,,— (i mm. 

 The cirrals are rather short, the longest ones L = the distal br. From 

 the 4*'' — 7'*' segments a transverse crista. A single doi'sal spine fi'om 

 the 7"' cirral. 



I Br 1 and 2 with a weak longitudinal cai'ination. Arms X, 

 broken. Syzygies: 3 + 4, 9+ 10, 14+ 15 etc. with an interval of 3 

 oblique articulations. 



l\ 10, shorter than P., which is 11; 4 mm. B.^ 1>; 3 mm. B^ 11. 

 B,, absent. Disk thrown off. 



Fixed on an Acanthogortjia Dofleini Ivvkth. & Gorz.^ 



Though C disciformis is evidently vei'y closely related to C. 

 manca I have, however, kept them as separate species. A. H. Clark 

 distinguishes the first-mentioned one from C. manca by the long proxi- 

 mal cirrals. Nevertheless at the same time he states (Siboga Exp. 

 \'ol. 42 B, p. IB)) that the length of the cirrals rapidly decreases in 

 specimens of C. (lisci/orinis from deeper water. The deepest localities 

 from which this species has previously been dredged are 180 fathoms. 

 The above-described specimens are found at depths of 400 ami !H) to 

 200 fathoms respectively and have therefore very short cirrals approacii- 

 ing those of ('. manca. I have described below a specimen from Kin 

 Shiu Islands belonging to this species. In this one the cirrals are never 

 longer than broad. It is moreover a smaller form than the abo\e- 

 described species from shallower water but in spite of that with shorter 

 cirrals. The larger C. disciformis seems also to have fewer ai-ms in 



' For tills infoimatiou I am iudfbted to my friend Mi-. Magnus Auhivillius. 



