A LIST OF SHELLS FROM THE EAST COAST OF FLORIDA.

BY BRYANT WALKER.

The late Dr. Charles A. Davis, the well known peat-expert of the U. S. Bureau of Mines, in addition to his special acquirements in geology and botany, was a good all-round zoologist and had a lively and unaffected interest in the work that any of his friends might be carrying on in that department. It was his kindly habit in his travels about the country to preserve any specimens that he came across that seemed to him likely to be of interest to any of his zoological friends. It will be remembered that the conchologists owe to him the rediscovery of the long lost Planorbis multivolvis Case, (Naut., XXI, p. 16), and also the little Lymnæa davisi Walker, (Naut. XXII, p. 17), which bears his name.

In the spring of 1911 Dr. Davis’ professional duties took him to Florida and while there he collected quite a number of samples of “drift,” which in due time came into my possession. Several of the localities represented in the collection, such as Miami and St. Augustine, have already been reported upon by previous collectors and there seems to be no occasion to duplicate their work, but quite a number of the places visited by Dr. Davis have not been covered by any of the previous collectors in Florida and a record of the species found by him seems worthy of publication as a contribution to the distribution of the Mollusca along the east coast of the state.

I am indebted to Dr. George H. Clapp for the identification of the Gastrocoptas and Vertigos.

The list of localities and species represented in the collection is as follows:

Marshes near Chester Shoals.
Euglandina rosea Fér.
Polygyra cereolus carpenteriana Bld.
Zonitoides minuscula (Binn.).
Zonitoides minuscula alachuana (Dall).
Vitrea dalliana (‘Simpson’ Pils.).
Pupoides modicus (Pfr.).
Gastrocopta rupicola (Say).
Gastrocopta pellucida hordeacella (Pils.).
Gastrocopta tappaniana (C. B. Ads.)?
Gastrocopta pentodon (Say).
Vertigo milium (Gld.).
Melampus coffeus (L.).
Detracia bulloides (Mont.).
Chrondropoma dentatum (Say).
Plecotrema cubense (Pfr.).
Blauneria heteroclita (Mont.).
Microtralia minuscula (Dall).
Truncatella clathrus Lowe.
Truncatella caribæensis pulchella Pfr.
Truncatella bilabiata Pfr.
Littoridina monroensis (Ffld.).

Paludestrina? sp.? A single specimen that I can not approximate to any of the described species.

This is the first record, I believe, for Plecotrema cubense from the mainland of Florida. Originally described from Cuba, it was listed from the Bermudas by Dr. Pilsbry in 1900, (Trans. Conn. Acad., X, p. 504, pl. lxii, fig. 11), and there figured by him for the first time. Both he and Mr. John B. Henderson inform me that they have collected it on several of the Keys and I am indebted to both of them for the opportunity of comparing my specimen with theirs.

Chester Shoals Refuge Station.
Euglandina rosea (Fer.).
Polygyra auriculata (Pfr.).
Polygyra uvulifera (Shutt.).
Polygyra cereolus (Mühlf.).
Polygyra cereolus carpenteriana (Bld.).
Polygyra cereolus septemvolva Say.
Polygyra cereolus volvoxis (Pfr.).
Praticolella jejuna (Say.).
Melampus coffeus (L.).
Detracia bulloides (Mont.)
Lymnaea humilis Say.
Physa cubensis Pfr.
Planorbis tumidus Pfr.
Planorbis alabamensis Pils.
Chrondropoma dentatum (Say).
Truncatella bilabiata Pfr.
Truncatella clathrus Lowe.
Littoridina monroensis (Ffld.).
Between Chester Shoals and Cape Canaveral.
Polygyra cereolus (Muhlf.).
Polygyra cereolus carpenteriana (Bld.).
Polygyra cereolus volvoxis (Pfr.).
Polygyra uvulifera (Shutt.).
Zonitoides minuscula (Binn.).
Pupoides modicus (Pfr.).
Gastrocopta pentodon (Say).
Gastrocopta pellucida hordeacella (Pils.).
Gastrocopta rupicola (Say).
Melampus coffeus (L.).
Detracia bulloides (Mont.).
Blauneria heteroclita (Mont.).
Chrondropoma dentatum (Say).
Truncatella bilabiata Pfr.
Truncatella clathrus Lowe.
Truncatella caribæensis pulchella Pfr.
Amnicola. sp.? A single immature specimen.
Canaveral P. O.
Euglandina rosea (Fer.).
Polygyra cereolus septemvolva Say.
Polygyra cereolus volvoxis (Pfr.).
Polygyra cereolus carpenteriana (Bld.).
Pupoides modicus (Pfr.).
Helicina orbiculata Say.
Eau Gallie.
Polygyra cereolus septemvolva Say.
Polygyra cereolus volvoxis (Pfr.).
Polygyra uvulifera (Shutt.).
Physa cubensis Pfr.
Helicina orbiculata Say var.
Island of Eau Gallie.
Polygyra uvulifera (Shutt.).
Praticolella jejuna (Say).
Lymnaea humilis Say.
Physa cubensis Pfr.
Palm Beach.
Euglandina rosea (Fer.).
Polygyra auriculata Say.
Polygyra cereolus carpenteriana (Bid.).
Strobilops floridana Pils.
Strobilops hubbardi (Brown).
Pupoides modicus (Pfr.).
Gastrocopta contracta (Say).
Gastrocopta rupicola Say.
Gastrocopta pellucida hordeacella (Pils.).
Gastrocopta pentodon (Say).
Vertigo milium (Gld.).
Vitrea dalliana (‘Simp.’ Pils.).
Vitrea indentata (Say).
Zonitoides arborea (Say).
Zonitoides minuscula (Binn.).
Zonitoides minuscula alachuana (Dall).
Guppya gundlachi (Pfr.).
Thysanophora granum (Streb.).
Physa cubensis Pfr.
Helicina orbiculata Say.
Long Key.
Euglandina rosea (Fer.).
Polygyra cereolus (Mühlf.).
Polygyra cereolus carpenteriana (Bid.).
Strophia incanum (Binn.).
Pupoides modicus (Pfr.).
Gastrocopta pentodon (Say).
Gastrocopta rupicola (Say)?
Gastrocopta pellucida hordeacella (Pils.).
Gastrocopta pellucida hordeacella (Pils.) var. Small form.
Thysanophora incrustata (Gld.).
Thysanophora granum (Streb.).
Thysanophora dioscoricola (Guppy).
Guppya gundlachi (Pfr.).
Varicella gracillima floridana Pils.
Succinea campestris Say?
Melampus coffeus (L.).
Detracia bulloides (Mont.).
Microtralia minuscula (Ball).
Lymnæa columella Say.
Physa cubensis Pfr.
Helicina tantilla Pils.
Chrondropoma dentatum (Say).
Truncatella caribæensis Sby.; Rve.
Truncatella caribæensis pulchella Pfr.
Truncatella clathrus Lowe.
Truncatella bilabiata Pfr.
Littoridina monroensis (Ffld.).
Amnicola. sp? A single specimen of a very small, globose form that may be an n. sp. Alt. 1 mm.