U. S. NATIONAL MUSEUM 



BULLETIN 76. PART 2 PL. 25 



1. 2. MYXODERMA PLATYACANTHUM. 3. M. PLATYACANTHUM RHOMALEUM. 4. M. SACCULATUM. 5-12. M. SACCULATUM 



ECTENES 



For explanation of plate see paoe facing 



04406 28 IS 



