PLATE XXIX. 



size. 



Fig. 2. Inferior side view of a compressed damaged specimen, from a photograph ; 

 natural size. 



Fig. 3. Superior (gastral) side view of the compressed damaged specimen shown 

 in fig. 2, from a photograph ; natural size. 



Fig. 4. A little specimen, preserved in alcohol, with some Palythoa investment 

 of the basal tuft ; natural size. 



Fig. 5. Vertical section through the marginal portion of the specimen shown in 

 figs. 2 and 3 (combination figure) ; x 20. 



Figs. 6-8. Amphidiscs of various sizes ; x 100. 



Fig. 9. Oxyhexact with straight barbed rays ; x 100. 



Fig. 10. Oxyhexact with bent barbed rays ; x 100. 



Fig. 11. Extremity of a strong bow-like bent principal diact ; x 300. 



Fig. 12. Strong bow -like bent principal diact; x 40 



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Hyalonema toxeres, Wyville Thomson, . . .201 



Fig. 1. Conical specimen, preserved in alcohol, without the basal tuft ; natural 



