48 THE NAUTILUS. 



ant. This is found sparingly associated with the following in the 

 true Everglade territory. 



Planorbis scalaris (Jay). Head of Miami River and Everglades 

 adjacent. Rather rare. This peculiar form is most typical of the 

 glades as contrasted with the Planorbes of the streams. 



Planorbis dilatatus Gld. Lemon City. Rare ; three specimens 

 taken in a small stream. 



Planorbis parvus Say. Lemon City. Only one specimen taken. 



Planorbis cultratus Orb. Very rare. One specimen secured from 

 a drainage ditch flowing into the Miami River two miles above its 

 mouth. The type locality for cultratus is Cuba. It was subse- 

 quently found in Texas. This is the first record of it from Florida. 



Ancylus peninsula Pils. & Johns. Miami and Lemon City. 

 Rather rare. Taken on rotten leaves in still water. 



Family 



Physa heterostropha peninsula Pilsbry. Miami, Lemon City, 

 Everglades, head of Miami River. Locally abundant, preferring 

 small streams in swift water, where they are generally attached to 

 weeds far below the surface. 



Family CYRENID^E. 



Pisidium abditum Hald. Miami and Lemon City. This minute 

 species is rare and difficult to secure alive. 



Family CYRENOIDID.E. 



Cyrenoidea ftoridana Dall. Miami. Abundant locally in the 

 outer edges of the Mangrove swamps skirting the bay. 



Family UNIONID.E. 



Unto paludicolus Gld. Upper Miami River and Everglades. 

 Rare, or at least difficult to secure, owing to its hiding among the 

 roots of thick algae in swift water. One was dredged in a small 

 stream near the town. 



Unio papyraceus Gld. Head of Miami River above the rapids. 

 Only three specimens of this fragile Unio were dredged while forty 

 of paludicolus were being secured. It is more than possible that 

 Gould's types of these two species came from the Miami region and 

 perhaps from the Miami River. 



GENERAL NOTES. 



PLANORBIS OPERCULARIS Var. OREGON T ENSIS Van., Nautilus IX. 

 p. 54, September, 1895, is preoccupied by P. oregonensis Tryon. 

 Mon. Fresh-water Univalve Moll, of the U. S. 1870, p. 200. I would 

 here propose the name multilineatus for my variety. E. G. VANATTA. 



