AMPULLARIIDa;. 11 



30. Ampullaria (Pomus) crassa- 



Ampullaria crassa, Swainson, ZooL III. I, Vol. Ill, 1822, Loc. ? ; Reeve, 

 fig. 5, Brazil. 



1 Ecuador; ex c. Dr. H. Dohrn. 



Agi'ees with. Reeve's fig. 6, only a little smaller and colu- 

 mella less straight. 



var. oblonga. 

 Near Reeve's fig. 106, as " A. crassa, oblong convohited var." 



1 Brazil; ex c. Prof. W. Newcomb (sent as " A. spixi"). 

 4 Amazon Ilv. ; ex c. Prof. W. Newcomb (as "A. nubila"). 



Alt. 22|-, diam. 19f mil. — Imperforate, intermediate between 

 Reeve's figs. 5 and 106 as regards convexity of the whorls and 

 height of the spire. I cannot detect the slightest difference 

 between Dr. Newcomb's specimens, and I believe they must 

 have come from one locality ; they do not in the least resemble 

 A. nubila or A. spixi ! 



31. Ampullaria (Pomus) platss. 



AiP])ullaria Platae, Maton, Trans. Lin. Soc, 1S09, R. Plata ;=^A. naticoides, 

 Orb. 1835 ; sect. Asolene. 



1 Hio Plata; ex c. A. Morelet, Esq. 



32. Ampullaria (^Pomus) pulchella. 



Ampullaria pulchella, Anton, Verz. Conch. 1839, [sine Hab.] ;=A, 

 roissyi. Orb. 1839. 



3 Hio Plata; ex c. A. Morelet, Esq. 



2 Kio Plata ; ex c. Dr. H. Dohrn (as " A. platcB "). 



33. Ampullaria (Pomus) elegans. 



Ampullaria elegans, d'Orbigny, Toy. Amer. Merid., 1839, Bolivia, ^c./=i 

 A. peristomata. Orb. 1835. 



4 Bolivia ; ex c. G. Nevill, Esq. 

 The above are all decollated, 



1 Hrazil ; ex c. Prof. W. Newcomb (as " ^. spixii"). 



