Plate 48. 

 1. Phormosoma placenta Wyv. Thorns. 



1. Left posterior ambulacriiin of specimen 7 mm. in diameter; "Blake" Station 150 c| 



Nevis, 375 f ms. 



2-6. Phormosoma hispidum A. Ag. 



2. Odd anterior ambulacrum of specimen 15 mm. in diameter (PI. 30, figs. 1,) 



Station 3362. 



3. Odd anterior ambulacrum of specimen 34 mm. in diameter (PI. 30, figs. 3, 4\ 



Station 3362. 



4. Odd anterior ambulacrum of specimen 53 mm. in diameter; Station 3400. 



5. Odd anterior ambulacrum of specimen 75 mm. in diameter (PI. 31, figs. 1, 



Station 3392. 



6. Odd anterior ambulacrum of specimen 120 mm. in diameter ; Station 3431. 



