30 NON-MARINE MOLLUSCS OF SURINAM. 
recognisable. Mr. Sowerby wrote to me it being quite 
different from anything he knew. As very unfortunately 
is the case with many shells collected by the Surinam- 
Expeditions, only a single specimen of this interesting 
species is found. 
I wish to dedicate this species to Mr. G. B. Sowerby 
at Kew. 
? 74. AMPULLARIA URCEUS Mill. 
Nerita urceus, Müller, Hist. Verm. II, 1774, p. 174. 
Ampullaria urceus Mill., Philippi, Syst. Conch. Cab., Ed. 
nov., Band I, Abt. 20, 1851, p. 54, T. 47, f. 4. 
Sowerby, Proc. Mal. Soc. VIII, 1909, p. 358. 
Martens, 1873, pp. 201, 215. Surinam. 
von Martens apparently gives the locality ,Surinam” upon 
Lister’s authority. But Lister, Hist. Conch. 125, 25, does 
not mention any locality. When von Martens is right in 
bringing Drouet’s A. guyanensis to this species, it would 
be occurring in French- and in British Guyana, and its 
occurrence in Surinam would not be surprising. 
? 75. AMPULLARIA GUYANENSIS Lam. 
Ampullaria guyanensis, Lamarck, Hist. nat., Vol. VI, 1819, 
p. 476. 
Philippi, Syst. Conch. Cab., Ed. nov., Band I, Abt. 20, 
1851, p. 68. 
Sowerby, Proc. Mal. Soc. VIII, 1909, pp. 351, 363. 
Lister, 1685, 128, 28. Surinam. 
According to Philippi, the figure of Lister represents 
this species. From this figure, to which is added the loca- 
lity ,Surinam”’, one can only infer that a very large specimen 
of a banded Ampullaria spec. has been collected in Surinam. 
* 76. AMPULLARIA GLAUCA L. 
Helix glauca, Linné, Mus. Ulric., 1764, p. 667. 
Nerita effusa, Miller, Hist. Verm. II, 1774, p. 175. 
Ampullaria glauca L., Philippi, Syst. Conch. Cab., Ed. nov., 
Band I, Abt. 20, 1851, p. 43, T. 12, f. 4. 
Sowerby, Proc. Mal. Soc. VIII, 1909, p. 350. 
Notes from the Leyden Musenm, Vol. XXXVI. 
