SPONGES. 



1. Tuba plicifera. " Bouquet Sponge." 



2. ParJiyrJialina rubens. " Silk Sponge." Color, when living, red. 



3. Hircitiia purpurea. "Wire Sponge." 



4. Spongia tubuUfera. " Finger Sponge." A peculiar variety of the 

 'Glove Sponge." 



