Puiate 46. 
1-7. Phormosoma hispidum A. Ag. 
. The lantern in place with the imbricating plates adjoining the actinal system, seen from 
the interior of specimen 203 mm. in diameter; Station 3413, 
. The same as fig. 1, seen somewhat in profile. 
. Compass seen in profile. 
. The same as fig. 3, seen from above. 
. Primordial plate in the right anterior interambulacrum, of young specimen 15 mm. in 
diameter; Station 3362. 
. The madreporic genital showing three madreporic openings of same specimen as fig. 5. 
. The last interambulacral plate of the right anterior interambulacrum, to show the first 
trace of a primary tubercle of same specimen as fig. 5. 
