. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. A Monographic Survey of South African Non-marine Mollusca. 485 1921. Planorbis (Planorbis) hermanni Bttg., Germ., Kec. Indian Mus., xxi, p. 20. D. 1922. Planorbis pfeifferi Krs., Dgnr., L.-u. S.-w. Fauna D.-Sw. A., Moll., pp. 40, 42, f. 15. N.F. 1925. Planorbis pfeifferi Krs., Cawst., J. Trop. Med. Hyg., xxviii, p. 365. F.R. 1925. Planorbis pfeifferi Krs., Cawst., Ann. Trop. Med. Parasit., xix, p. 217, f. 5. F. 1925. Planorbis pfeifferi Krs., Cawst., Trans. E. Soc. S. Africa, xiii, p. 40, pi. iv, f.

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. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. A Monographic Survey of South African Non-marine Mollusca. 485 1921. Planorbis (Planorbis) hermanni Bttg., Germ., Kec. Indian Mus., xxi, p. 20. D. 1922. Planorbis pfeifferi Krs., Dgnr., L.-u. S.-w. Fauna D.-Sw. A., Moll., pp. 40, 42, f. 15. N.F. 1925. Planorbis pfeifferi Krs., Cawst., J. Trop. Med. Hyg., xxviii, p. 365. F.R. 1925. Planorbis pfeifferi Krs., Cawst., Ann. Trop. Med. Parasit., xix, p. 217, f. 5. F. 1925. Planorbis pfeifferi Krs., Cawst., Trans. E. Soc. S. Africa, xiii, p. 40, pi. iv, f.  Stock Photo
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. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. A Monographic Survey of South African Non-marine Mollusca. 485 1921. Planorbis (Planorbis) hermanni Bttg., Germ., Kec. Indian Mus., xxi, p. 20. D. 1922. Planorbis pfeifferi Krs., Dgnr., L.-u. S.-w. Fauna D.-Sw. A., Moll., pp. 40, 42, f. 15. N.F. 1925. Planorbis pfeifferi Krs., Cawst., J. Trop. Med. Hyg., xxviii, p. 365. F.R. 1925. Planorbis pfeifferi Krs., Cawst., Ann. Trop. Med. Parasit., xix, p. 217, f. 5. F. 1925. Planorbis pfeifferi Krs., Cawst., Trans. E. Soc. S. Africa, xiii, p. 40, pi. iv, f.
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. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. A Monographic Survey of South African Non-marine Mollusca. 485 1921. Planorbis (Planorbis) hermanni Bttg., Germ., Kec. Indian Mus., xxi, p. 20. D. 1922. Planorbis pfeifferi Krs., Dgnr., L.-u. S.-w. Fauna D.-Sw. A., Moll., pp. 40, 42, f. 15. N.F. 1925. Planorbis pfeifferi Krs., Cawst., J. Trop. Med. Hyg., xxviii, p. 365. F.R. 1925. Planorbis pfeifferi Krs., Cawst., Ann. Trop. Med. Parasit., xix, p. 217, f. 5. F. 1925. Planorbis pfeifferi Krs., Cawst., Trans. E. Soc. S. Africa, xiii, p. 40, pi. iv, f. 6. N.F.R. 1925. Planorbis (Planorbula) pfeifferi Krs., Conn., ibid., xii, p. 195, pi. viii, f. 16-19. N.A.R. 1926. Planorbis pfeifferi Krs., Germ. & Nev.-Lem., Ann. Parasit., iv, p. 370. D.F. 1929. Planorbis pfeifferi Krs., Faust, Human Helminthology, pp. 568, 569. N.R. 1929. Planorbis pfeifferi Krs., Cawst., Trans. K. Soc. Trop. Med. Hyg., xxii, p. 336. N. 1930. Planorbis pfeifferi Krs. ( = hermanni Bttg.), Conn., Ann. S.A. Mus.,xxix,p.311. N. 1932. Planorbis pfeifferi Krs., Blackie, Mem. London Sch. Trop. Med., v, p. 31, pi. i, f. 3-4. N.F. Eggs. 1932. Planorbis pfeifferi Krs., Vogel, Arch. Schiffs-u. Trop.-Hyg., xxxvi, p. 114. N.F. 1933. Planorbis (Coretus) pfeifferi Krs., Germ., Bull. Mus. Paris, p. 139. N.L. ? 1934. Planorbis pfeifferi Krs., Conn., Ann. Trop. Med. Parasit., xxviii, p. 439. N. 1936. Planorbula pfeifferi pfeifferi Krs., Haas, Abh. Senckenb. Ges., No. 431, p. 24. N.L. 1936. Planorbula pfeifferi hermanni Bttg., Haas, ibid., p. 25. N. 18 13 14. Text-fig. 42.—Biomphalaria pfeifferi (Krs.), Lorenzo Marques. Teeth from radula; x 500. Shell of fair size, discoid, concave on both sides, especially in centre, silky, moderately glossy, greenish or yellow-brown. Whorls 4J, regularly increasing,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrati