PLATE XVI. 



Oreaster nahensis. 



2-41. Abactinal view, x O.G. 



242. Actinal view, x O.G. 



243. Valve of au abactinal pedicellaria. x 90. 



Oreaster dœderleini. 



244. Aljactiual view, x 0.5. 



245. Actinal view, x 0.5. 



24(5. A'alvw of a pedicellaria close to the mouth, x 45. 



247.) 

 , 1- Valves of ventrolateral pedicellaria?. x 45. 



248. j 



249. Abactinal pedicellaria. x 45. 



250. Abactinal pedicellaria (valvate). x 45. 



251. Another form of abactiüal pedicellaria. x 45. 



