28 NON-MARINE MOLLUSCS OF SURINAM. 
* 68. AMPULLARIA LEVIOR Sow. 
Ampullaria levior, Sowerby, Proc. Mal. Soc. VIII, 1909, p. 
361, fig. p. 362. 
Environs of Paramaribo. van Heurn, 1911. 
Among the specimens of A. /ineata, collected near Para- 
maribo by Mr. van Heurn, there was one specimen, charac- 
terized by an expanded peristome, and agreeing with the 
description and figure, given by Mr. Sowerby. It has the 
same size as the type, the aperture measures 34 X 23 m.M. 
Mr. Fulton, who had the kindness to compare it with 
specimens in the collection of himself and Mr. Sowerby, 
wrote to me he could not separate it from A. /evior. 
* 69. AMPULLARIA SINAMARINA Brug. 
Bulimus sinamarinus, Bruguiere, Journ. Hist. Nat. I, p. 342, 
SAS NEND ce 
Ampullaria sinamarina Brug., Philippi, Syst. Conch. Cab., 
Ed. nov., Band I, Abt. 20, 1851, p. 27, T. 7, f. 5. 
Sowerby, Proc. Mal. Soc. VIII, 1909, p. 357. 
Surinam. Voltz. 
Nickerie. Voltz. 
Lawa River. / Gonini-Expeditie. 
Lenabari. Gonini-Expeditie. 
Upper Gran Rio. Corantijn-Expeditie. 
Lucie River. Corantijn-Expeditie. 
Martin, 1888, p. 68. Surinam River. 
All specimens, the young ones included, have the apex 
eroded. This species appears to occur in the principal rivers 
of Surinam. 
* 70. AMPULLARIA GRANULOSA Sow. 
Ampullaria granulosa, Sowerby, Proc. Mal. Soc. I, 1894, p. 
49, Pl. 4, f. 24. 
Litani. Gonini-Expeditie. 
Lawa. Gonini-Expeditie. 
Unfortunately only one specimen from each locality was 
collected. The Litani-specimen measures: length 76, diam. 74, 
length of aperture 56'/,, diam. 38 m.M.; the Lawa-specimen : 
length 59, diam. 53, length. of aperture 44, diam. 28 m.M. 
Notes from the Leyden Museum, Vol. XXXVI. 
