208 F. BEUMRD 



39. 1878. Sars (M.). — Mollusca regionis articœ Norvegiœ. Bidrag til Kuns- 



taben om Norges arktiske Fauna. 



40. *896. Simroth (H.). — Die Acephalen der Plankton-Expedition. Ergeb- 



nisse Plankton-Expedition, 2 F. 



41. 1885. Smith (E. A.). — Challenger Reports, vol. XIII. Lamellibranchiala. 



42. 1888-90. Steinmann (G.). — Elemente der Paléontologie. 



43. 1870-71. Stoliczka (F.). — Gretaceous Fauna of Soulhern India, III, 



ser. VI. ThePelecypoda. Memoirs Geol. Survey of lndia. Palœonto- 

 logia indica. 



44. 1893. Ulrich (E. 0.). — New and little known Lamellibranchiata from 



the lower Silurien Rocks of Ohio. Report Geol. Survey of Ohio, 

 vol. VII. 



45. 1894. Ulrich (E. O.). — New and little known Lamellibranchiata of 



Minnesota. Report Geolog. Survey of Minnesota, vol. III. 



46. 1897. Ulrich (E. 0.). — The lower Silurian Lamellibranchiata of Minne- 



sota. Minnesota Geol. Survey., vol. III, part. III, Palaeontology. 



47. 1890. Walcott (C. D.). — Fauna of the Olenellus Zone. U. S. Geological 



Survey, 4 th annual Report. 



48. 1897. Whiteaves. — Geological Survey of Canada, Palœozoic fossils, 



vol. III, part. III. 



49. 1885. Zimmermann (E. H.). — Ein neuer Monomyarier aus dem osthù- 



ringishen Zechstein (Prospondylus Liebeanus) . Jahrb. der 

 K. Preuss. Geolog. Landesanstalt und Bergademie zu Berlin. 



50. 1865-66. Zittel (K.). — Die Bivalven der Gosaugebilde. Denkschr. der 



K;K. Akad. Wissensch. Wien., Bd XXV. 



51. 1887. Zittel (K.). — Traité de Paléontologie (trad. fr.) II. 



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