in three zones ; some specimens from Madura-bay are marked with a few scattered spots, the 

 other specimens are whitish in different shades. 



14. Nerita (Ilynerita) planospira Anton. 



Anton. Verzeichniss 1839, P- 30- 



RUMPH. Amb. Rariteitkamer, p. 78. Sp. 4, [gramdata 2^ Sp.?) 



Reeve. Conch. Ic. Vol. IX, Nerita, fig. 38. {atropurpiirea). 



V. Martens. Martini-Chemn. Conch. Cab. Ed. II, Nerita, p. 23, PL 4, fig. 4 — 7. 



Stat. 19. Bay of Labuan-Tring, West coast of Lombok. 18 — 27 M. i Spec. 

 Stat. 86. Dongala, Palos-bay, Celebes. Reef, i Spec. 



The reference to Rumph is somewhat doubtful, his description being rather too short 

 and not sufficiently characteristic to recognize the species with certainty. 



15. Nerita polita Linne. 



LiNNE. Syst. Nat. Ed. X, p. 778, N° 638. 



Rumph. Amb. Rariteitkamer, p. jj, PI. XXII, fig. I, K. 



Reeve. Conch. Ic. Vol. IX, Nerita, fig. 2. 



V. Martens. Martini-Chemn. Conch. Cab. Ed. II, Nerita, p. 72, PI. 3, fig. 5, 10 — 15; PI. 14, fig. I — 7. 



Stat. 19. Bay of Labuan-Tring, W. coast of Lombok. 18 — 25 M. i Spec. 

 Stat. 225. Lucipara-island. Reef 2 Spec. 

 Stat. 279. Roma. Reef i Spec. 



var. Rumphii Rechiz. 



Recluz. Revue Zool. 1841, p. 108. 



Rumph. Amb. Rariteitkamer, p. 78, Sp. 8 p.p., PI. 22, fig. 7. 



Reeve. Conch. Ic. Vol. IX, Nerita, fig. 62 a— k. 



V. Martens. Martini-Chemn. Conch. Cab. Ed. II, Nerita, p. 74, PL 14, fig. 8 — 13. 



Stat. 19. Bay of Labuan-Tring, W. coast of Lombok. 18—27 M. 3 Spec. 

 Stat. 47. Bay of Bima, near South fort. Shore. 10 Spec. 

 Stat. 51. Madura-bay. Reef 2 Spec. 

 Stat. 86. Dongala, Palos-bay, Celebes. Reef 4 Spec. 

 Stat. 152. Wunoh-bay, N. W. coast of Waigeu-island. Reef I Spec. 

 'Java. I Spec. 



The shell fio-ured on PI. 22, fig. 7, by Schijnvoet, in Rumph's Amb. Rariteitkamer, seems 



to me to agree better with the variety than, with the type, with which v. Martens (Rumphius 



Gedenkboek) identifies it; this figure shows distinctly the spiral riblike striae, characteristic for 



the variety. 



16. Nerita antiquata Recluz. 



Recluz. Revue Zool. 1841, p. 106. 



Reeve. Conch. Ic. Vol. IX, Nerita, fig. 5. 



V. Martens. Martini-Chemn. Conch. Cab. Ed. II, Nerita, p. 81, PL 14, fig. 19—21. 



Stat. 19. Bay of Labuan-Tring, W. coast of Lombok. iS — 27 M. i Spec. 

 Stat. 47. Bay of Bima, near South fort. Shore. 4 Spec. 

 Stat. 50. Bay of Badjo, W. coast of Flores. Shore. 2 Spec. 



7 



