PLATE XXVI. 



Figs. 1-3. Antedon quadrata, n. sp. 

 Fig. 1. A young specimen (Challenger), . 



Fig. 2. An older individual (Challenger), . 



Fig. 3. Another, rather small (Fseroe Channel), 



Figs. 4, 5. Antedon australis, n. sp. 

 Fig. 4. A mature individual, . . . . . x 3 146 



Fig. 5. Another, much younger, . . . . x 4 148 



