found abundantly on grains of the beach sand, below high-water mark, at Ford Brooke, Tampa. [details]
Hab. St. Anastasia Island, near St. Augustine, Fa. [details]
"A fine, large, and very distinct species, which appears to be widely diffused in the estuaries of the United ... [details]
Hab. Enterprise, Florida, where it is common in Lake Monroe, and in several of the smaller creeks near Mr. Duval's. [details]
Hab. Hudson River, West Point ; St. Augustine and Enterprise, Florida [details]
Common everywhere along the Atlantic coast and in estuaries ; also abundant in the fossil state, in the Infusorial ... [details]