References
- Feilden . 1889 . Ibis , : 478 – 478 . id. Zoologist, 1889, p. 295; id. ibid. 1890, p. 52.
- Drouët , H. 1859 . Essai Moll. terrest. fluv. Guyane franç. , : 54 – 54 .
- Man. Conch. ser. 2 , iii 205 – 205 .
- Ann. Sc. Nat. , xxiv ( 1 ) 15 – 15 .
- Conch.-Cab. , ed. 2 341 – 341 . 342 (Helix).
- 1862 . Ann. Lyceum Nat. Hist. New York , vii : 360 – 360 .