REPRODUCTION AND ARTIFICIAL PROPAGATION OF FRESH-WATER MUSSELS. 1 97 



Ortmann, a. E. 



1909. The breeding season of Unionidse in Pennsylvania. Nautilus, vol. 22, p. 91-95 and 99-103. 



1910a. A new system of the Unionidae. Ibid., vol. 23, p. 114-120. 



1910b. The discharge of the glochidia in the Unionidae. Ibid., vol. 24, p. 94, 95. 



igii. A monograph of the Najades of Pennsylvania. Memoirs of the Carnegie Mtiseum (Pitts- 

 burgh), vol. 4, p. 279-347. 

 Peck, R. H. 



1877. The minute structure of the gills of lamellibranch MoUusca. Quarterly Journal of Micro- 



scopical Science, vol. 17, p. 43-66. 

 Pfeiffer, C. 



1821. Naturgeschichte deutscher Land- und Siisswasser-Mollusken. Weimar. 

 POUPART, F. 



1706. Remarques sur les coquillages k deux coquilles, et premi^rment sur les Moules (Anodontes). 

 M^raoires de 1 'Academic des Sciences de Paris, p. 51-61. 



QUATREFAGES, A. dE. 



1835. Sur la vie intrabranchiale des petites Anodontes. Aimales des Sciences naturelles, t. 4. 



1836. M^moire sur la vie intrabranchiale des petites Anodontes. Ibid., t. 5, p. 321-336. 

 RathkE, J. 



1797. Om Dammuslingen. Naturhistorie Selskabets Skrifter (Kj6benha\Ti), t. 4, p. 139-179. 

 SCHIERHOLZ, C. 



1878. Zur Entwicklungsgeschichte der Teich- und Flussmuschel . Zeitschrift fiir wissenschaft- 



liche Zoologie, bd. 31, p. 482-484. 

 1888. Ueber Entwicklung der Unioniden. Denkschriften der kaiserlichen Akademie der 

 Wissenschaften (Wien), Mathematisch-naturwissenschaftliche Classe, bd. 55, p. 183-214. 

 Schmidt, F. 



1885a. Vorlaufiger Bericht iiber Untersuchungen der postembryonalen Entwicklung von Ano- 



donta. Sitzungsberichte der Dorpater Naturforscher-Gesellschaft, p. 303-307. 

 1885b. Beitrag zur Kenntniss der postembryonalen Entwickliuig der Najaden. Archiv ftir 

 Naturgeschichte, jg. 51, p. 201-234. 

 Simpson, C. T. 



igoo. Synopsis of the Naiades, or pearly fresh-water mussels. Proceedings of the United States 

 National Museum, vol. 22, p. 501-1044. 

 Sterki, V. 



1895. Some notes on the genital organs of Unionidae, etc. Nautilus, vol. 9, p. 91-94. 



1898. Some observations on the genital organs of L'nionidae, etc. Ibid., vol. 12, p. 18-21 and 



28-32. 

 1903. Notes on the Unionidae and their classification. American Naturalist, vol. 37, p. 103-113. 

 1907. Note. Nautilus, vol. 21, p. 48. 



