Plate 68. 

 1-5. Echinocrepis setigera A. Ag. ; Station 3399. 



1. Interior view of the actinal face of specimen 92 min. in length (PI. 67, fig. 1). 



2. Interior view of abactinal face of same specimen (PL ()7, fig. 2). 



3. Enlarged view of anal system and posterior part of test, seen from the action 



same specimen (PI. 67, fig. 1). 



4. Enlarged view of apical part of the posterior ambulacra and odd interambul 



the same specimen as fig. 2, seen from the interior. 



5. I'rimary interarabulacral tubercle with surrounding secondaries and miliari- 



actinal plate from the left posterior iuterambulacrum. 



