U. S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 84 PLATE 2 





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Scales OF Microdesmus, ■ 80. 



1, M. ionthas (Jordan and Gilbert); 2, M. floridanm (Longley), from the type; 

 3, M. dipus Giinther; 4, M. affinU Meek and Hildebrand, from the type; 

 5, M. retropinnis Jordan and Gilbert; 6, M. hildebrandi, new species, from 

 the type; 7, M. intermedins Meek and Hildebrand, from the type; 8, M. mul- 

 tiradiatus Meek and Hildebrand, from the type; 9, M. longipinnis (Wey- 

 mouth), from a paratyiie. 



