U. S. NATIONAL MUSEUM 



BULLETIN 82. PART 4A PLATE 25 



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97-100, lleterometra propimjua: 97, 98, Cotype from Siboga station 318, X 2 (U.S.X.M., K. 431): 99, same, 

 proximal pinnules, X 2; 100, proximal pinnules of a specimen from Siboga station 320, X 2 

 (U.S.N.M., E. 420). 



101, Heteromttra crenulata: Proximal pinnules of a specimen from Albatross station 5358 (U.S.X.M., 35181) 



(see also figs. 93, 94). 



