266 



NOTES ON THE LAND AND FRESHWATER SHELLS 

 OF BARBADOS. 



By lewis B. brown. 



(Reail before the Society, September lo, 1902). 



The following notes are published in continuation of the paper by 

 Mr. Edgar A. Smith and Col. H. W. Feilden.^ Thirty-one species 

 were then given to which are now added thirteen as new to the island 

 and recently collected — these are marked in the accompanying table 

 with an asterisk. The following species have also been added, 

 namely: — Pleurodonte dentiens on the authority of Mr. E. W. Williams, 

 who has collected specimens in the Pine Estate Woods, and Neritina 

 Virginia, a brackish -water species, that doubtless had been collected 

 before, but was omitted from the list, making a total of forty-six 

 species. Mr. E. A. Smith stated that only five appeared to be 

 peculiar to Barbados. Two freshwater forms, LimncEa cubensis, var. 

 and Paludestrifia ventrosa and one terrestrial, Ccecilianella acicula, 

 have been introduced. 



The finding of Helicina barbadensis in Porter's Wood and else- 

 where removes the doubt as to the correct localization of the specimens 

 in Cuming's collection, but the occurrence of the following species 

 must still remain doubtful : — Vitrea incisa, Pleurodonte perplexa, Thy- 

 sanophora turbi?iiformis, Buliiiiulus tenuissinius, B. fraterculus, Opeas 

 gundlachi, Helicina conoidea, and Physa granulata. The writer has 

 collected all in the accompanying list with tliC exception of these eight. 



A few remarks on the thirteen new species found will not be out of 

 place. It will be noticed that whilst Vitrea incisa has not yet been 

 collected, a new form Vitrea iniplicans, identified by the authorities of 

 the Smithsonian Institution, has been secured ; this is not new to 

 the West Indies, however, as it is recorded from Trinidad.^ Although 

 only two dead specimens of Cerion uva have been secured, they have 

 been added to the list, as they were found so far apart that others may 

 be expected to occur. Ennea bicolor, Ccecilianella niinutissinia, C. 

 aperta, Helicina nigosa, and Opeas ascendens have doubtless been 

 introduced from the neighbouring islands, where they are all found, 

 as will be seen by the Table of Distribution. Ccecilianella acicula has 

 probably been introduced from Europe. 



Of the four new freshwater forms, two at least are of a very 

 interesting character, namely :- Limncea cubensis, var. and Paludestrina 

 ventrosa. The latter is a native of the Mediterranean region, occurring 

 in Great Britain, along the coast of west and north-west Europe, and 



1 Ann. and Alag. Nat. Hist.., ser. 6, vol. 8, p. 247-257, Sep., 1892. 



2 Smith "MoUuscaof Trinidad," /, Conch., vol. 8, p. 238, 1898. 



