A. H. CLAEK : THE CRINOIDS OF THE INDIAN OCEAN. 



259 



6 (3+4 ; 5+6); one of the IIIBr series is 4 (3+4), the others 3 (2 + 3); the stem 

 is 335 mm. long with twenty-two internodes ; the third specimen is immature ; it 

 has fourteen arms 70 mm. long, the terminal third of which bear only rudimen- 

 tary pinnules ; there are two IIBr 4 (3 + 4) and one IIIBr 1 series developed ; the 



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Fig. 51. — Comastrocrinus ornaliis 

 The stem. 



stem is 140 mm. long with twelve internodes. The stem of this specimen 

 resembles that figured in the small specimen of Isocrinus decorus shown by 

 P. H. Carpenter in the "Challenger" report on the Stalked Crinoids (pi. xx.w, 

 fig, 1), but the cirri are more slender; in the most distal internodes the eolumnars 



