96 PLATE xxxvin. 



Abbey Bay, near Torqiiay, in its natural condition, as 

 preserved in salt and water. Natural size. 



Fig. 10. — One of the minute, entirely spined, cylin- 

 drical spicula from the dermal membrane. X 1050 

 linear. 



Fig. 11. — A spiculated triradiate spiculum from the 

 skeleton. X 80 linear. 



Fig. 12. — One of the attenuated biangulated skeleton 

 spicula. X 80 linear. 



