46 T. GisLÉN, 



In iill these specimens one finds tlic variable appearance of the 

 cirri peculiar to 0. solaster. The only difference from the specimens 

 described by A. H. Clakk is the number of C, which in the Bockian 

 species are more numerous and arranged in 2 to 3 whorls. The above- 

 described specimens might perhaps therefore be characterized as a 

 foi'ma multicirra. 



Comanthus pinguis A. II. Clakk. 



Fig. 35, 36. 



Syn: Comaiifhus pinçiuis 1919 A. H. Clark Proc. U. S. Nat. Mus. Vol 37, 

 p. 29; 1912 Crin. Ind. Oc. p. 94; Smiths. Misc. Coll. Vol. 60, N:o 10, p. 9; 1915 

 Monograph; Journ. Acad. Sei. Vol. 5, p. 214; 1918 Siboga Exp. Vol. 42 B, p. 49. 



From St. 14 (2 sp.), 15 (1) [18(1)1 = 4 specimens. 



Sji. 1 (St. 14) Cd almost hemispherical, 9 mm., free dorsal pole 

 5 mm., a little hollowed in the middle. G. XXXVIII 28—33; 30-36 

 mm. in 2 whorls. P' and 2'' segments short, 3'' to 5"' cubical or 

 somewhat longer., 6"' — 10"' segment L = 1 1/2 br. Distal ones L = \2 X br. 

 Dorsal prominences from the 15"' to 20"' segments, L = + V^ of the br 

 of the cirral. A weak opposing spine. Terminal claw slightly curved. 

 L = 1 V2 X the preceding segment. 



R — s slightly visible at the corners. I Br 1 h = \;4 br, in the 

 basal half united with each othei-. Between them a depression in the 

 perisome. I Brax h = Vs x br, pentagonal, the distal margins slightly 

 concave. The br 6,;. — 7 mm. Primipostaxillaries united inside. On 

 theii' distal, interdistichal side a depression as between the primi- 

 brachial series. Divisions-series broad, smooth, flattened, but the pe- 

 risome between them is quite visible. The distance between II Br 3 in 

 two different division-series is 3,5 mm. Disk reaching to II Br 2 or 3. 

 II and III Br— s:4 (3 + 4). Arms XXXYHI 125 mm. +, very fragile. 

 Br-segments distally somewhat, but only slightly, thickened. Syzygies 

 distally with an interval of 4 oblique articulations. Fxample of arm- 

 ramification and proximal syzygies: 



