SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE, VOL. XXxXill. PLATE 28. 
Baprerreme mpmerrerecs: 
Fic. 6. 
Fic. 5. 
BAL4SNOPTERA DAVIDSONI, ACUTO-ROSTRATA, AND VELIFERA (?). 
Figs. 1 and 2.—B&, davidsoni, Valdes, Alaska. Figs. 3 and 4.—B. acuto-rostrata, Quoddy Head, Maine. Figs. 5 and 6,—A. velifera(?), California, 
