AMPULLARIID.E. 11 



30. Ampullaria (Pomus) erassa- 



Ampullaria erassa, Sioainson, Zool. III. I, Vol. Ill, 1822, Loc. ? ; Reeve, 

 fig. 5, Brazil. 



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



Agrees witli Reeve's fig. 5, only a little smaller and colu- 

 mella less straight. 



var. oblonga. 



Near Reeve^sfig. 106, as " A. erassa, ohlong convolnfed var." 



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

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



Alt. 22J, 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. nuhila or A. spixi ! 



31. Ampullaria (Pomus) platse. 



Ampullaria Platse, Maton, Trans. Lin. Soc, 1S09, R. Plata ;=A. naticoides, 

 Orb. 1835 ; sect. Asolene. 



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



32. Ampullaria TPomus) pulchella. 



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

 roissyi, Orb. 1839. 



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



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



33. Ampullaria (Pomus) elegans. 



Ampullaria elegans, d'Orbigng, Voy. Amer. Merid., 1839, Bolivia, Sfc.;= 

 A. peristomata. Orb. 1835. 



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

 The above are all decollated. 



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



