U. S. NATIONAL MUSEUM 



BULLETIN 93 PL. 73 



2e 









3b 



1-1B, CHTHAMALUS CAUDATUS; 2-2c, C. WITHERS; 3-3e, C. DALLI ; 4, 4A, C. 



SCABROSUS. 



FOR EXPLANATION OF FIGURES SEE PAGE 357. 



