640 MEMOIRS OF THE CARNEGIE MUSEUM. 



1915 Ihering, H. Von. jMoHuscos, in Commissao de Linhas Telegraphicas Estra- 



tegicos de Matto Grosso ao Amazonas. Ann. V, 1915, pp. 1-14. 

 1819 Lamarck, J. B. de. Histoire Naturelle des Animaux sans Vertebres, VI, 1819. 

 1832-1874 Lea, L Ob.sorvations on the Genus Unio. Vols. I-XIII, 1832-1874. 

 1870 Lea, L Synopsis of tlie Family Unionida>. Fourth edition, 1870. 



1917 Marshall, W. B. New and Little-known Species of South American Fresh- 



water Mussels of the Genus Diplodon (Proc. U. S. Nat. Mus. LIII, 1917, pp. 

 381-388). 

 1885 Martens, E. Von. LTeber brasilische Land- und Suesswasser-Molhisken. (Sitz. 

 Ber. Gesellsch. naturf. Fr. BerUn, 1885, pp. 147-149). 



1894 Martens, E. Von. Die von Dr. Bohls in Paraguay gesammelten Mollusken 



(Sitz. Ber. Gesellsch. naturf. Fr. Berlin, 1894, pp. 163-170). 



1895 Martens, E. Von. Mollusken von Paraguay (Sitz. Ber. Gesellsch. naturf. 



Fr. Berlin, 1895, pp. 33-35). 

 1900 Martens, E. Von. Biologia Centrali-Americana. Land and Freshwater Mol- 



lusca. 1900-1901. (Unionidfe, pp. 478-540, 1900). 

 1893 Nehring, a. LTeber Najaden von Piracicaba in Brasilien (Sitz. Ber. Gesellsch. 



naturf. Fr. Berlin, 1893, pp. 159-167). 



1918 Odhner, N. H. Zur Kenntnis der Homologien des Bivalvenschlosses (Geolog. 



Foren. Stockholm Forhandl, 1918, pp. 562-590). 

 1835 Orbigny, a. D'. Synopsis terrestrium et fluviatilium Molluscorum in suo per 



Americam Meridionalem Itinere (Magas. de Zoolog., 1835). 

 1843 Orbigny, A. D'. Voyage dans I'Amerique Meridionale, V, part 3, Mollusques. 



1835-1843. 

 1910 Ortmann, a. E. The Soft Parts of Spatha kamerunensis , Walker (Nautilus, 



XXIV, 1910, pp. 39-42). 

 1911a Ortmann, A. E. The Anatomical Structure of Certain Exotic Naiades compared 



with that of the North American Forms (Nautilus, XXIV, 1911, pp. 103-108; 



114-120; 127-131). 

 19116 Ortmann, A. E. A Monograph of the Naiades of Pennsylvania (Mem. Car- 

 negie Mus., IV, 1911, pp. 279-347). 

 1911c Ortmann, A. E. The use of the Generic Names Unio, Margaritana, Lymnium, 



and Elliptio, and of Anodonta and Anodontites (Nautilus, XXV, 1911, pp. 



88-191). 

 1912 Ortmann, A. E. The Anatomy of the Naiad Hyridella australis (Lamarck) 



(Nautilus, XXV, 1912, pp. 100-103). 

 1918 Ortmann, A. E. The Anatomj- of two African Naiades, Unio caffer and Spatha 



wahlbergi (Nautilus, XXXI, 1918, pp. 75-78). 

 1893 PiLSBRY, H. A. Notes on the Genera of ITnionidse and Mutelidse (Nautilus, 



VII, 1893, p. 30). 



