The Crixoids from Dr. S. liocx's Kxpkditidx to Japax l!U4. 7:? 



R — s nari'dw. siiioolh bands, li = ' ,, hr. I Br I -f 2 li = br. as 

 Br I and 2 with ventro-laliM'al. I'ather iironounccd ledges. Bi- I br = 

 1.4 11)111. Syzygies: 3 r 4. S -! ll, 12 + l;{ etc-, with an intei'val of 3 

 obli(|ue articulations. Arms \'. 40 — 4.j nun. smooth. 



P, !•: 8..-. mm. (1 — 3 oi' .') segments with a distally directed crista. 

 I"' segment much decreasing indximally, 2'' segment broadest. The h 

 of the crista = ' :; of the br of the segment, compare the figure), Pj 

 it); 4 mm., similar to the iircccding. P., 11; ■") mm. (3'' segment L = V/2 

 br, distal segments with a somewhat spiny border, L = 2 — 2'/2 br), 

 P., 11: 5 mm., P,, 12: ."> mm.. l';j II: 5 mm. (with a small spiny gar- 

 land on the distal segments|. Distal p. l(i — 17: 4.:. mm. (the segments' 

 L = 3 br. the 3 last ones with dorsal hooks; 4 paii's of large sacculi 

 per segment I. 



Coloui-: Cii-ri white. Arms dorsally brown with white trans- 

 Acrse spots. The pinnulars whitish, the sacculi dark-coloured (in 

 alcohol). 



At first I had some doubt whether this specimen was not only 

 a full-grown specimen of those described as Eu. gracilis pulchsllus. 

 Ne\ertheless some differences are of such a nature that I have been 

 obliged to believe that the specimen differs not only by characteristics 

 of age. The most impoi-lant differences are as follows: 



1) The cirrals are short, not very much longer than broad, not 

 at all or only slightly hour-glass-shaped (Cf. Eii. pinnatus and varie- 

 gatuH). 2) Pj and Pi are on the proximal segments provided with i)ro- 

 minences that are lacking in Eu. gracilis piilcheUus. By these promi- 

 nences it approaches Eu. venustxdufi. 3) Further En. Loreni differs 

 from Eu. gi-acilis jndcliellus by the arms which, though of about the 

 same length as in the last-mentioned species, ai'c much coarser, 4) by 

 the more spiny borders of the distal segments of P._, and P.,, 5) by the 

 relati\-ely shoi-t distal pinnules. 



'V\\Q newly proposed species, which I have called after the late 

 Prof. S. LovKX. is thus a peculiar type connected with many species 

 within (he genus Eudiocrinus. 



Nora Acta Reg. Soc. Sc. Ups., Ser. 1, Vol. 5. X:o 6. luijir. ~/s 1922. 



