SOWERBY : ON AMPULLAEIID^. 347 



The umbilicus of some specimens is completely closed, in others partly 

 open. In view of the inconstancy of this latter character it is 

 hardly practicable to maintain Ball's section Liinnopomus, to which 

 this species seems to belong. 



11. Ampxtllaei.a. Catamarcensis, Sowerby. 

 Proc. Zool. Soc, 1874, p. 600, pi. Ixxii, fig. 4. 

 Hab. — Cataraarca, Andes of Peru. 



12. Amptjllaeia cekasum, Hanley. 

 Conch. Miscellany; Reeve, Conch. Icon., fig. 99. 

 A. aurostoma, Reeve (Lea MSS.), Conch. Icon., fig. 131. 

 Hah. — Mexico. 



13. Ampullakia cingulata, Philippi. 

 Conch. Cab. Amp., p. 19, pi. v, fig. 3. 

 Hah. — ? (Berlin Museum). 

 A doubtful species which may possibly be young of A. gigas. 



14. Ampullaria citreum. Reeve. 

 Conch. Icon., sp. 117. 



Hah.— ? 



15. xImptjllaria columellaris, Gould. 

 Gould, "Otia," p. 51. 

 A. Spnicei, Reeve, Conch. Icon. Amp., fig. 134. 



Hah. — Tarapoto, east side of the Andes (Spruce) ; Rio Chuuchurras, 

 Peru (Da Costa) ; Amazon River. 



This is the type of Ball's section Liinno2}oinus, Journ. Conch., 

 vol. xi, pp. 53, 54. See above note on A. Castelloi, 



16. Ampullaria conoidea, Martens. 

 Biologia Central. Araer., 1899, p. 423, pi. xxiv, figs. 10, 11. 



Hah. — Costa Rica. 



17. Ampullaria cornucopia, Reeve. 

 Conch. Icon. Amp., fig. 4. 



Hah. — Columbia (Reeve). 



18. Ampullaria Costaricana, Martens. 

 Biologia Central. Amer., 1899, pp. 418, 644, pi. xxiv, figs. 14-17. 

 Hah. — Costa Rica. 



19. Ampullaria Cousini, Jousseaurae. 

 Bull. Soc. Zool. Fr., 1877, vol. xii, p. 185, pi. iii, fig. 3. 

 Hah. — Ecuador. 



20. Ampullaria cuassa, Swainsou. 

 Zool. Illust., ser. i, vol. iii, p. 101 ; Reeve, Conch. Icon. Amp., 



fig. 5. 

 A. Browni, Jay: Ann. Lye. Nat. Hist. jN'ew York, 1846, vol. iv. 

 A. Olivier i^ Beshayes. 

 Helicina exwmhilicata, Spix. 



