24 T. GisLEN, 



H — s appearing as small flaps in tlie corners. I Br J h = ' s br, 

 latero-basally united witli one another. I Br 2 low triangular, h = ' ,3 X br. 

 A weak synarthrial tubercle with close articulation between I Br 1 

 and 2. The arms X, smooth, broken, about 25 mm. Syzygies with 

 an interval of 3 oblique articulations. 



I\— P3 with a comb. P, 20 jOT) +4,5 mm., P^ + 22 (8 T) + 3,5 

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



Sp. 3 (St. 8) C. n- XX 12—13: 5— 5.:. mm. (some of the dorsal 

 ones very small !>: 2 mm.; these have an antepenultimate segment 

 whose L = IV2 X bi'). 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,, P., 17 (N T) 3,:> mm. 

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



*Sp. 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 — P^ with a comb. 



Comissia gracilipes A. II. Claiok. 



Fig. 15—17. 



.Syn.: CoDilssia c/racllipes 1912 A. H. Ci.akk Proc, Biol. yoe. \^'asllillglon. 

 Vol. 2.5." p. J9; 1918 A. H. Clark Siboga Exp. Vol. 4L' B, p. 22. 



P^'rom St. 35: 2 specimens. 



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

 4 — (5 mm. in a single whorl. 3'' segment L = 3 X br, 4''' segment 

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



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

 angular h = '3 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 '-sXbr. 

 Arms X, 35 mm. Tlie br of the Br;s at the middle i)arts of the arms 



