PLATE XXV. 



Agassizia excentrica A. Ag. 



Fig. 1. Seen in profile, covered with spines, 20 mm. long, diameter. 

 Fig. 2. A specimen of the same size, seen in profile, denuded. 

 The same, seen from the actinal side. 

 The same, seen from the abactinal side. 

 The same, seen facing the odd anterior ambulacrum. 

 The same, seen facing the anal -\-lnu ipusti-riur extremity). 

 Young Agassizia, J7 mm. long, diameter, seen in profile. 

 The same, seen facing the anal system. 

 The same, frem the abactinal pole. 

 The same, seen from the actinal side. 



Enlarged abactinal system, with adjacent part of test of a small specimen 6.5 mm. long. 

 diameter. 



I system of a young Agassizia, 3 mm. long, diameter. 

 Actinal system of same. 

 Fig. 14. Magnified miliary spines of the lateral fasciole. 

 Fig. 15. One of the large ambulacral suckers of the odd anterior petaloid ambulacrum, expanded, from 



a specimen 11 mm. long, diameter. 

 Fig. 16. Four ambulacral suckers from same, of the outer petaloid part of the odd anterior ambulacrum, 

 soini'u bat contracted. 



