The Ceinoids from De. S. Bock's ExPEDITIO^^ to Japan 1914. 21 



except fur the number of cii'i-als chiefly differs by having thicker and 

 coarser arms, smoother arm-bases, and by having the distal Br-seg- 

 ments less bent outward. 



It is to be supposed that the 3 species described above make 

 hybrids. A specicimen (Sp. 12) of C. hracliycirra approaches the 2 

 other Gomatellas by having somewhat spiny Br-segments. Compare 

 also Sp. 4. of C. stelligei-a. 



Comissia A. H. Clark. 

 C. peregrina var. magnifica ii. var. 



Fig. 10, 11. Photo 2. 

 From St. 59 : 2 specimens. 



Sp. 1. Cd pentagonal with somewhat prolonged corners. Dia- 

 meter 5,5 mm. Free dorsal part 2,r. mm. Height 1,.j mm. 



Cirri thrown off, pits of XXXV — XL in 2 whoi'ls. 



R — s appearing as small flaps in the corners. I Br 1 h = V^ br 

 laterally united with each other, forms with 1 Brax a low synarthrial 

 tubercle as Br 1 with Br 2. Axillary h = '/s br, low pentagonal. Br 1 

 grown together inside. Br 2 on the outer side 3 X broader than on 

 the inner side. Br 3 + 4 narrow bands; 4"' and 5"' segments form a 

 weak tubercle directed inwards, 5'^ and 6"' give rise to a similar one 

 directed outwards; ()"'-7*'' and 8*— 9* form inward directed, 7*— 8*'^ 

 and 9"' — 10*'' outward directed knobs, then rounded segments with 

 more or less oblique articulations. Syzygies 3 + 4 . . 13 + 14 . . 17 + 18 

 etc. with an interval of 3 to 4 oblique articulations. Distal Br-segments 

 triangular, the long side 7^ ^ ^r. The arm-profile distaliy smooth, 

 proximally somewhat serrate. iVrms X, 150---170 mm. Ki segments 

 pr. cm. (if syzygial pairs are counted as units 11 or 12). Breadth of 

 the arms 2,5 — 1,3 mm. 



Pj 50 — 55 (22 — 25 last segments rolled in a double spiral with 

 large rather pointed teeth, h = the br of the segment. 2''— 7"' or 8"' 

 segments with dorsal knobs, weakly projecting. The remaining seg- 

 ments smooth, though distaliy weakly coflar-shaped, not at all or only 

 a little longer than broad) 17 mm., P2 13 mm. P3 and P^ still some- 



