DUTCH BORNEO-EXPEDITION. 439 



Subgenus Potamon s. s. and subg. Geothelphusa Stps. 



4. Abbotti Rathbun 1898 Malay Peninsula. 



2. africamim A. M. E. 1869 .... Gaboon. 



3. Anchietae Cap. 1870 North of Angola. 



4. andersonianum W.-Mas. 1871. . . W. Yunan, Upper-Burma. 



5. angustifrons A. M. E. 1868 . • . Cape York. 



6. artifrons Burg. 1894 Philippine Islands. 



7. atkinsonianum W.-Mas. 1871 . . . Darjeeling, Nepal. 



8. Aubryi H. M. E. 1853 Gaboon. 



9. aurantium Hbst. 1799 East-Indies. 



10. austenianiim W.-Mas. 1871 . . . Cherra Punji. 



41. Ballayi A. M. E. 1886 Congo. 



42. bayonianum Cap. 1864 North of Angola. 



» var. a. Cap. 1870 . . South of Angola. 



13. Berardi Aud. 1826 Egypt. 



14. bicristatum de M. 1899 West-Borneo. 



15. bipartitum Hilgd. 1898 German East-Africa. 



16. Bottegoi de M. 1898 Country of the Somali. 



17. Bürgeri de M. 1899 West-Borneo. 



18. callianira de M. 1888 Mergui Archipelago. 



49. cariniferum de M. 1888 Mergui Archipelago. 



20. celebense de M. 1892 Celebes. 



» var. lokaensis de M. 1892 . Celebes. 



» var. pareparensis de M. 4892. Celebes. 



21. chilense Hell. 1862 Chili. 



22. consobrinum de M. 1899 .... West-Borneo. 



23. corrugatum Hell. 1868 Madras, Java. 



24. crassum A. M. E. 1869 Cape York. 



25. crassum Miers 1884 (Report Voyage 



of H. M. S. » Alert", 1884, p. 235). Thursday Island. 



26. cristatum A. M. E. 1869 .... Habitat unknown. 



27. Cumingii (White) Miers (Report 

 Voyage of H. M. S. » Alert", 1884. 



p. 236) Philippine Islands. 



*28. cunicularis Westw. 1836 .... Western Ghats. 



29. Decazel A. M. E. 1886 Franceville, San-Benito. 



30. Dehaanii White 1847 Japan. 



31. denticulatum H. M. E. 1853 . . . China. 



32. depressum Krauss 1843 Natal. 



*) The species marked with an asterisk, are those the description of which I 

 have not heen able to consult. There are among the species mentioned in the 

 List several synonymes some of which have been indicated. 



Notes from the Leyden Museum, Vol. XIX I. 



