U. S. NATIONAL MUSEUM 



BULLETIN 166 PLATE 









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Species of Hypoconcha and Larval Dromid, Evius. 



1, Evius ruber, male, X 2-*5 (approximately), ventral view (after Moreira); 2, same, dorsal view; 3, 

 Hypoconcha sabulosa, male (66796), X I75' (approximately), dorsal view; 4, same, ventral view; 5, //. /oi/;eJ, 

 female holotype (67575), X I75 (approximately), dorsal view; 6, same, ventral view. 



