132 PROCEEDINGS OF THE ACADEMY OF [1887- 



Stenogyra riovemgyrata, Mousson, Jour, de Concli., 1870, p. 126. 

 (Subulina), Paetel, Cat. Couch., p. 104. Schmeltz, Cat. Mus. Godeff., 

 V, p. 90. 



Bulimus novemgyratus, Pfeiffer, Mon. Hel., viii, p. 138. 



Stenogyra gyrata, Moussou MS., iu Mus. GodefFroy, 1885. 



This species, which is distributed over a Larger geographical area 

 than any other species of land-shell, is diffused throughout all parts 

 of Polynesia, the low coral islands as well as the more elevated 

 groups, and ranges throughout Melanesia, Micronesia, Australasia,. 

 Moluccas, Philippines, Guam, Ceylon, Siam, Cochin China, China, 

 and probably extends its range as far as the East coast of Africa. 



Since the publication of my paper on the Society Island land- 

 shells I have received from Mr. E. L. Layard, examples of Bulimus: 

 Souverbianus and B. Artemis,hoth of which are identical with Poly- 

 nesian specimens of S. Tuekeri. 



Through the kindness of Dr. Hungerford, of Hong Kong, I have 

 been enabled to compare Pfeiffer's Bulimus Panayensis with JB. 

 Tuekeri and cannot detect a single character to separate the two 

 species. 



I am strongly inclined to believe that the West Indian Stenogyra 

 subula, Pfr., is a form of the Polynesian S. Tuekeri, and was acci- 

 dentally imported with the Tahitian bread-fruit plants nearly 100 

 years ago. M. M. Crosse and Fischer (Jour, de Conch., 1863, p. 361), 

 record the West Indian Bulimus subula from Cochin China, and 

 give a good figure of the same, which is, undoubtedly, the ubiquitous 

 S. Tuekeri. 1 reproduce their remarks as follows : - 



"Cette espece provient de Saigon et de Fuyen-Moth, oii elle a ete 

 recueillie, par M. Michau, dans les fosses, dans la terre et sous les 

 herbes. II peut sembler tres-extraordinaire de retrouver en Cochin- 

 chine une espece des Antilles, qui n' a guere ete signalee jusqu' ici 

 qu'a Cuba, a la Jamaique et a Saint-Thomas. Pour ne conserver 

 aucun doute a son egard, nous avons cru devoir soumettre un indi- 

 vidu authentique a 1' examen de M. Pfeiffer, qui a cree 1' espece. 

 II faut done accepter le fait, qui peut etre, au reste, seulement un 

 accident d' acclimatation : la petitesse et la Icgerete de la coquille 

 en question rendent cette supposition vraisemblable." 



I have lately received from Dr. Hungerford, several examples of 

 Stenogyras, labelled " Opeas subulata Pfr., Hong Kong" which 

 differed none from the Polynesian S. Tuekeri. 



