PLATE XXVI. 



Figure 1. QuiuqiuhiculiiKi ruriirianu \)'Or\ngny. Side view. X 80. 



2. Quinqiidondina hinistiiUi \yOr\A'yuy. Side view. X 80. 



3. QuinqudondiiKi hin.stnUi Ii'( )rliigny. Aiiertural view of a lliird siirriuieii. :< 80. 



4. QuinqurlofuJiiiii himsldUi D'Orbigny. Opposite side of another specimen. X SO. 



5. Quinqudiicu! i iKi i(iiii!<lii Karrer'! vnr. Side view. X 80. 



6. Quinquckiculinu sp.? Side view. X 40. 



120 



