THE NAUTILUS. 



Vol. XXXII. APRIL, 1919. No. 4 



NOTES ON CERTAIN PHILIPPINE SPECIES OF VIVIPAEUS. 



BY BRYANT WALKER. 



Several months ago Mr. Walter F. Webb, of Rochester, 

 N. Y. , placed in my hands for identification a small collection 

 of Philippine Vivipari. The very considerable search of the 

 literature that was found necessary to determine the proper 

 names to be used for certain species has brought about some 

 interesting results in the matter of nomenclature. 



I. 



PALUDINA (VIVIPARA) CARINATA Auct. 



No less than four distinct species have been described by as 

 many different authors as Paludina carinata or Vivipara carinata, 

 viz: 



1820-3. Paludina carinata Swainson. Ganges. 



1827. Paludina carinata Valenciennes. Mexico. 



1863. Paludina carinata Reeve. Philippine Is. 



1867. Vivipara carinata Bartsch. Philippine Is. 



It will be more convenient to treat these species separately. 



II. 



PALUDINA CARINATA Sw. PI. VIII, fig. 1. 



Paludina carinata Swainson. Zool. Ills., Series I, 1820-3, 

 pi. 93, center figure. 



Swainson's original figure is reproduced as above and his 

 brief description is as follows: 



