48 T. GiSLEN, 



Sj). S. (St. \')) Cd S mm., free dorsal pole 5 mm. C. XXXII 

 23 — 28, 18 — 25 mm. Dorsal s|)iiies a little stronger than in the pre- 

 ceding specimen. 



I Br 2 h = * 3 br. the distal angle somewhat jjrolonged, br =f) mm. 

 Arms XXXII 115 mm. The interspaces l)et\veen II Br 3 : 2.n mm. The 

 arm-branches somewhat more slender than in the preceding specimens. 



Piix4-5 (5 to U T.. the lip smooth) 2(5—33 nmi. P,„ or P, 

 (4- 10 T) 23 ram. P2 8 — it T. is mm.: P.,— P.^ with a small, short oonili 

 (3—5 T): P,; without a comb IS; 5.:, jnm. 



Disk 28 mm. Anal cone 4,:. mm. ('(dour a little nioi-e grey- 

 l)rown than in the foregoing specimens. 



One may possibly also assign a young Comasterid (St. IS) to 

 this species. 



S/K 4 ? (St. 18) C. XIII 1(1—12: 2,..- 3 mm. 3'— 5"' segment 

 longest L = 1 ' 2 X l)r. 



K_s h = 1 3 X l)r. I Br I h = ' 2 X br. latterally h-ee. I Brax 

 h = 2/3Xbr, pentagonal, the distal margins straight. Br 1 inside 

 almost h-ee. Arms X. 7 mm. P*^ syzygy between Br 3 and 4. The 

 segments distally collar-shaped, spiny, and overlapping. 



Pj with an indistinct comb, the tip is smooth, the ]»innule rolled. 

 T 7 low, sparse, obtuse. P., — P^ to Pr, ai-e lacking. 



Disk 2,3 mm. Mouth and anus sulicentral. Ana! cone I nun. 

 Disk rather »lean», weakly papillated. 



A comi)arison with specimens in Dr Mortensen's collection from 

 Japan showed that it is only the very largest specimens of C. pinguis 

 that have the ossicles of the division-series so broad that they grow 

 together laterally. The division-series are. however, always (even 

 when not in lateral contact) strikingly broad and ilat. C. japonica^ 

 according to the scheme in the Siboga volume, has narrow division- 

 sei'ies, leaA'ing broad parts of the perisome unprotected. Nevertheless 

 A. H. Clark says about the origiiuil specimen (Leyden Mus. \'ol. 33. 

 p. 181) that »the division-series are rather broad». The formation of 

 I Brax seems to be a charac-teristic of species more certain than this 

 one. While C. 'jdngnis has an axillary that in old specimens gets 

 almost straight distal margins, these in C. japonica are very concave, 

 and therefore the distal angle of the axillary becomes very prolonged 

 (As also in ('. solaslcr). 



