Narrative of an Expedition Through the Upper Mississippi to Itasca Lake, the Actual Source of This River / Embracing an Exploratory Trip Through the St. Croix and Burntwood (or Broule) Rivers

by Henry Rowe Schoolcraft

6. Lymneus reflexus, Say. 1. c. pl. xxxi. fig. 2. Rainy Lake, Seine River, and Lake Winnipec.

7. Lymneus stagnalis. Lake a la Crosse, Upper Mississippi.

PALUDINA.

8. Paludina ponderosa, Say. Wisconsin River.

9. Paludina vivipara, Say. Am. Con. i. pl. x. The American specimens of this shell are more depressed than the European, but appear to be identical in species.

MELANIA.

10. Melania virginica, Say. Lake Michigan.

ANODONTA.

11. Anodonta cataracta, Say. Chicago, Lake Michigan. This species, Mr. Lea remarks, has a great geographical extension.

12. Anodonta corpulenta, Nobis. Shell thin and fragile, though less so than others of the genus; much inflated at the umbones, margins somewhat compressed; valves connate over the hinge in perfect specimens; surface dark brown, in old shells; in younger, of a pale dingy green, and without rays, in all I have examined; beaks slightly undulated at tip. The color within is generally of a livid coppery hue, but sometimes, also, pure white.