A M P U L L A 11 1 A letlexa, 

 Purple Apple Snail. 



Generic Character. — See PI. 103. 



Specific Character. 



A. testa ovato-globosd, Icexi ; spird ventricosd, obtusd, sub epidermide 

 purpurea; apertitrd nigro-purpnrascente ; labia exteriore tcnui, 

 margine refiexo. 



Shell ovate-globose, smooth ; spire ventricose, obtuse ; beneath the 

 epidermis, purple ; aperture blackish purple ; outer lip thin, 

 the margin reflected. 



Knorr, vol. 5. pi. 5.f. 2. (uncoated.) 



ArapuUaria reflexa. Swamson, in Tilloch's Ph. Mag. vol. 6\. p. 377. 



The only record that I can find (in the works of the old 

 writers) for this Ampullaria, is the figure by Knorr above 

 quoted ; it is obviously drawn from an uncoated specimen, 

 although I have seen instances, where the blackish purple 

 on the spire was so intense, as to obscure the thin epidermis 

 which covered it. The peculiar character of the species, 

 and in which it differs from all others, is in the outer margin 

 of the lip ; which is thin, rather spread out, and slightly 

 reflected ; the form of the shell resembles A. fasciata, but 

 the spire, instead of being pointed, is obtuse ; the umbilicus, 

 likewise, is smaller and more concealed. From the absence 

 of a groove round the aperture, I conclude the operculum is 

 horny. 



The size varies ; perfect shells are in my possession much 

 smaller than the figure, and 1 have seen others much larger, 

 and with the aperture more chesnut than purple. 



I am not acquainted with its locality. 



PI. 172. 



