C56 MEMOIRS OF THE CARNEGIE MUSEUM. 



EXPLANATION OF PLATE XLI. 



Shells of Monocondylaea hollandi Ortmann, Anodontites crispata BRUGiiiRE, 



AND Anodontites clessini (Fischer). 



All figures natural size. 



Fig. 1. Monocondylwa hollandi Ortmann, from Rio Guapore, near Rio Sao Simao, 

 Matto Grosso, Brazil. Carn. Mus. Cat. No. 61.5846. 



Fig. la. Holotype, male, lateral view. 



Fig. lb. Holotype, male, dorsal view. 



Fig. Ic. Holotype, male, inner view of right valve. 



Figs. 2 and 3. Anodontites crispata Bruguiere, from Rio de la Paila, Paila, U. S. 

 of Colombia. Carn. Mus. Cat. No. 61.9274 (See also Plate XL, figs. 7 and 8). 



Fig. 2a. Nearly adult specimen (sex ?), lateral view. 



Fig. 26. Nearly adult specimen (sex ?), inner view of right valve. 



Fig. 3. Young specimen (sex ?), lateral view. 



Fig. 4. Anodontites clessini (Fischer), from Rio Vaccahy-mirim, Santa Maria, 

 Rio Grande do Sul, Brazil. Carn. Mus. Cat. No. 61.5820 (See also Plate XLII, figs. 1 

 and 2). Male (No. 12), lateral view (See also Plate XLII, fig. 1). 



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