44 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125. 
1951. The genera Xironodrilus and Pterodrilus in North America with notes 
on other North American genera of the family Branchiobdellidae, 
pp. 1-241, 380 pls. University of Virginia: unpubl. doctoral 
dissertation. 
1953. Characters of systematic importance in the family Branchiobdellidae 
(Oligochaeta). Virginia Journ. Sci., vol. 4, n. s., no. 2, pp. 57-61. 
1960a. The genus Ceratodrilus Hall (Branchiobdellidae, Oligochaeta), with 
the description of a new species. Virginia Journ. Sei, vol. ii, 
n.s., no. 2, pp. 53-77, 4 pls. 
1960b. On a new genus of the family Branchiobdellidae (Oligochaeta). 
American Midl. Nat., vol. 64, no. 1, pp. 169-176, 4 figs. 
1965. The systematic position of the Branchiobdellidae (Annelida: Clitel- 
lata). Syst. Zool., vol. 14, no. 1, pp. 25-32, 3 figs. 
1967a. Oedipodrolus oedipus, n. g., n. sp. (Annelida, Clitellata: Branchiob- 
dellida). Trans. American Micros. Soc., vol. 86, no. 1, pp. 58-60, 
4 figs. 
1967b. Status of genera Branchiobdella and Stephanodrilus in North America 
with description of a new genus (Clitellata: Branchiobdellida). 
Proc. U.S. Nat. Mus., vol. 124, no. 3631, pp. 1-10, 2 figs. 
1968. The Branchiobdellida: Epizodtic annelids. The Biologist, vol. L, 
nos. 3-4, pp. 79-94. 
Hout, Perry C., and Horrman, Ricwarp L. 
1959. An emended description of Cambarincola macrodonta Ellis, with re- 
marks on the diagnostic characters of the genus (Oligochaeta: 
Branchiobdellidae). Journ. Tennessee Acad. Sci., vol. 34, no. 2, 
pp. 97-104, 6 figs. 
Liane, YAN-LIN. 
1963. Studies on the aquatic Oligochaeta of China: 1, Descriptions of new 
naids and branchiobdellids. Acta Zool. Sinica, vol. 15, no. 4, 
pp. 560-570, 4 figs. 
Moors, J. Percy 
1895a. Pterodrilus, a remarkable discodrilid. Proc. Acad. Nat. Sci. Phila- 
delphia, 1894, pp. 449-454, 3 pls. (figs. 1-2d). 
1895b. The anatomy of Bdellodrilus illuminatus, an American discodrilid. 
Journ. Morphol., vol. 10, no. 2, pp. 497-532, pls. 28-32. 
Moszyfsx1, AMBROZY 
1937. Oligochaetes parasites de l’ecrevisse (Potamobius astacus L.) de la 
Yougoslavie. Bull. Soc. Sci. Skoplje, vol. 18, no. 6, pp. 69-75, 
7 figs. 
1938. Quelque remarques sur le Branchiobdellidae européens. Ann. Mus. 
Zool. Polonici, vol. 23, no. 9, pp. 89-103. 
PIERANTONI, UMBERTO 
1912. Monografia dei Discodrilidae. Ann. Mus. Zool. Univ. Napoli, n. s., 
vol. 3, no. 24, pp. 1-28. 
Pop, Victor 
1965. Systematische Revision der europiischen Branchiobdelliden (Oligo- 
chaeta). Zool. Jb. Syst., vol. 92, pp. 219-238, 11 figs. 
STEPHENSON, J. 
1930. The Oligochaeta. Oxford University Press. 
VEJDOVSKY, FRANZ 
1884, System und Morphologie der Oligochaeten. Prague: F. Rivndé. 
U.S. GOVERNMENT PRINTING OFFICE: 1968 
