Plate 31 



Fig. 1. Unio lepidus Gould. Lake Monroe, Florida. Lectotype MCZ 169223. Length 



63, height 35, width 25 mm. (1.1 x). 

 Fig. 2. Unio papyraceus Gould. Everglades of Florida. Lectotype USNM 86125. 



Length 41, height 25, width 15.2 mm. (nat. size). 

 Fig. 3. Unio paludicolus Gould. Everglades of Florida. Lectotype MCZ 169278. Length 



39, height 46, width 14 mm. (1.1 x). 

 Fig. 4. Unio petrinus Gould. Llanos River, Texas. Holotype MCZ 169291. Length 38, 



height 32, width 19 mm. (1.1 x). 

 Fig. 5. Unio bracteatus Gould. Llanos River, upper Texas. Lectotype USNM 84966. 



Length 54, height 30, width 15 mm. (nat. size). 



