,^3:l:5^?^&^-C53^^S^ 



spines 



Flg. 21-'io. Com«4-ffr serrata (St. 59) 21) Pji ».,, 22) The tip of P.„ (9 Tl. x 17' =, 23) Cirrus ' 

 24) An arm-stump with distal p-s "/r, 25) The base of an arm with I and H Br series Tlie spir 

 winch occur at the distal margins of the segment are most often broken »i; 26—29 Comaster deli- 

 cata grandis (.Sp. 1) 26) The tip of a distal pinnule "/i. 27) The tip of Pn '* i 28) Cirrus ' i 29) The 

 tip of a genital p. with a comb, X 17 '/a; 30, 31 Comantheria grandkalyx (St. 52) 30) Distal pin- 



