3S T. GisLÉN, 



l*,i and 1», 25—30 ((i Tj (i mm.. Il — 1:{ first segmeiils willi \ciy 

 spiny distal collars, F^ -^- 23; 5 mm. (The 7 most proximal segments 

 spiny), P3 + 2O; 3 mm., P^ + 15 (5 T), 2,5 mm. P,— P4 or P5 with combs, 

 then on every two or three pinnules to about Pg,,. The teeth of the 

 combs: h = lV2Xthe br of the segments. Distal p. 20; G,.^ mm. the 

 segments (except the most proximal): L = 2 X br, at the ends knotty 

 swollen and spiny. 



Mouth central. Anal funnel lateral, papillated. Disk smooth 

 without granules, 6 mm. Colour brownish. 



Si). 2 (St. 55) C. XIV, 9—10, 4-0 mm. 3^' and 4'" segments 

 L = 3 X br. 



R — s narrow bands. I Br:s 1 laterally free, h = ^'3br. I Brax 

 h = ^/2 br, pentagonal. Primipostaxillaries united inside. II Br:s are 4 

 (3 cases); III br:s : 2 (2 cases). The arms are XV 45 mm. Syzygies 

 with an interval of 3 oblique articulations. 



P^ — P4 with combs; afterwards here and there but scarcely 

 farther than to P^o- Example P^ P2 P3 \\ Pg P9. Pi with 5, P2 with 4 T. 



Mouth subcentral. Anal funnel large, papillated, swollen, 1,5 mm. 

 Disk 3 mm., dark brown. Colour for the rest light grey-brown. 



Sp. 8 (St. 45) C. XVI S— 9; 2—3 mm. 3'' and 4*'' segment L = 

 3 X br. 



I Br 1 laterally free, h = V3 br. Axillary h = ^ 2 X br. Primi- 

 postaxillaries free inside. II Br:s are 4, III Br:s : 2. Arms XIII 25 mm. 

 Br-segments strongly bent outwards and serrate. Syzygies as before. 

 (After III Brax 1 + 2345..). Length of the distal segments = 1S2 — 

 2 X br. 



Pi— P3 or P^ with short, high combs of 4—5 T. Pj + 25; 2..:,— 3 

 mm. No distal pinnules with combs. Distal p. 12 — 14; 4 — 5 mm. 



Disk 2,5 mm., a little cushion-shaped. Mouth central. Anal 

 funnel short, coarse, smooth, length 0,8 mm., breadth about the same. 



See for the rest the description of the young forms from Bonin 

 Island (p. 58), some of which certainly belong to this species. 



As in the preceding species, the, young forms of this one seem 

 to lack combs on distal pinnules. The finest example of this is Sp. 3 of 

 Gomaster serrata. The specimen in question is a connecting link bet- 

 ween the X-armed young forms (it has like these only a couple of 

 proximal pinnules provided with combs) and the full-grown specimens 



