24 T. GisLÉN, 



R — s appearing as small flaps in the coi-iiers. 1 \'>r I h = 's br, 

 latero-basally united with one anotliei'. I l>r 2 low triangular. li = ' sXbr. 

 A weak synarthrial tubercle with close ai-ticulation between I Br 1 

 and 2. The arms X, smooth, broken, about 2") mm. Syzygies with 

 an interval of 3 oblique articulations. 



P^-P., with a comb. P, 2(i (HT) +4,5 mm., Pg + 22 (8 T) + 3,5 

 mm. P3 similar, 3 mm. Distal p. 13 segments. Disk 3 mm. 



Sp. 8 (St. S) C. + XX 12—13; 5—5,0 mm. (some of the dorsal 

 ones very small 9; 2 mm.; these have an antepenultimate segment 

 whose L = IV 2 X br), 2'^ segment L = 2 X br, 3" L = 3 X br, 4"' L = 2 X br; 

 antepenultimate segment as in Sp. 2. 



The arms X, 15 — 20 mm. I Br 1 h = ^ 5 br. Axillary triangular 

 h = ' 2 br. Br 1 + or — 2. Br 1 h = '3 br; Br 2 h = ' 3' br (on the 

 outer side) or ''5 br (on the inner side). Syzygies with an interval of 

 3 oblique articulations. 



Pi— P3 with a comb. Pj + 24 (10 T) 5 mm,, P3 17 (S T) 3,5 mm. 

 P4 11; 3,5 mm. The segments coarse, smooth, somewhat swollen. 



S}). 4 (St, 4) A specimen corresponding to Sp. 1 which has 

 crept into a calcareous sponge. C. 12; 5,5 mm. Antepenultimate seg- 

 ment L = br. Arm-length about 30 mm. Pj — P3 with a comb. 



Comissia gracilipes A. H. Clark. 



Fig. 15—17. 



Syn.: Comissia gracilipes 1912 A. H. Clark Pioc, Biol. Soc. Washington. 

 Vol. 25,' p. 19; 1918 A. H. Clark Siboga Exp. Vol. 42 B, p. 22. 



From St. 35: 2 specimens. 



Sp. 1. Cd 2 mm., free dorsal part 1,3 mm. C, XVIII 9—12: 

 4 — 6 mm. in a single whorl. 3'' segment L = 3 X br, 4*'' segment 

 L = 2 X br, a transition segment. Antepenultimate segment L = ^2 bi'. 



R— s and I Br 1 almost completely hidden by Cd.. Axillary tri- 

 angular h = Vs X br. Br:s 1 united inside, h = ' 4 X br, in close arti- 

 culation with Br 2, the height of which (on the outer side) is '2 X br. 

 Arms X, 35 mm. The br of the Br:s at the middle parts of the arras 



