PLATE XVII. 



Culcita novae-guinese. 



252. Abactinal view. Slig;htly reduced. 



253. Actinal view. Slightly reduced. 



254. Mouth angle, x 3. 



255. Portion fo furrow margin. The right side is the adceutral. 



X 5. 



256. Adambulacral pedicellaria, after treatment witli caustic potash. 



X 90. 



257.] 



I Valves of actinal pedicellarire. x 90. 

 258. J 



259.) 



[ Valve of an abactinal pedicellaria. x 90. 

 260.) ^ 



261.) 



[ Two views of a flattened specimen. SHghtly reduced. 



Choriaster granulatus. 

 263. Adambulacral pedicellaria. x 90. 



