U. S. NATIONAL MUSEUM 



BULLETIN 93 PL. 67 



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1a 





lc 



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"Tf^T -, -. 



a 



1b ^ 



1-1c, 3, 4, PLATYLEPAS HEXASTYLOS; 2, P. H. ICTHTHYOPHILA. 



FOR EXPLANATION OF FIGURES SEE PAGE 356. 



