The Rhfi.t. Bn 



Platt; IV 



UNIVALVE SHELLS 



18 

 19 

 20 

 21 



Open Melongena, Mdongcna palula, B.and S. 

 Fighting Wclongena, Mclojigcna pngilina, Born. 

 Leafy Frog Shell, Ranella joliala, Brad. 

 Rudolph's Purple, Purpura Rudolphi, Linn. 



Copyright, 1908, by Doubleday, Pjye 



OF TROPICAL -SEAS 



22 Little Red^Triton, Triton rubecula, Linn. 



23 Nicobar Spindle Shell, Fiisns Nicobaricus, Chemn. 



24 Melongena, Melongena melongena, Linn. 



25 Triton, Triton aquatilis, Rve. 



