Smithsonian Contributions to Knowledge, Vol. xxxin. 



Plate 28. 



l-i.-,. I, 



Fig. 



KiG. 4. 



IG. 5 



Fig. ( 



BALMNOPTERA DAVIDSONl, ACUTO-ROSTKATA. AND VEUFER.\ (?). 

 Figs. , an<l 2.~B. davidsoni, Vil.ies, Alaska. Figs, 3 a.ul ^.-B. aculo-rostraU,, Qnoddy Head. M,.inc. Figs. 5 and 6.-5. tv///^™(?). Lahfornm. 



