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EXPLANATION OF THE PLATES. 
PLATE XVIL 
Eunicea mammosa , p. 221 . 
Of the natural size. 
PLATE XVIII 
Fig. 1. Isis gracilis, p.236. 
Of the natural size. 
2. Mopsea verticillata, p. 233. 
Stem and branch, of the natural size. 
PLATE XIX. 
Fig. 1. Melitea textiformis, p. 231. 
Of the natural size. 
2. Acleona grisea , p. 238. 
Of the natural size. 
THE END. 
Printed by A. J. Vnlpy, Red Lion Court , Fleet Street , 
