Puate 84, 
1, 2. Pilematechinus Rathbuni A. Ag.; Station 3374. 
1. Same specimen as Pl. 83, fig. 2, seen facing the anal system and the odd posterior 
interambulacrum. 
2. The same specimen, in profile, seen facing the right posterior interambulacrum (P1. 82, 
fig. 1). 
Both figures natural size. 
