no. 2071. NEW GENUS OF DISCODRILID WORMS— HALL. 193 



Ceratodrilus thysanosomus from "crayfish" (Salt Lake City, Utah). 



Pterodrilus alcicornus from Cambarus acuminatus (Watauga County, 

 North Carolina). ' 



Pterodrilus distichus from Cambarus bartonii (western New York). 



Moore (1895:454) mentions Bdellodrilus manus, new species , from 

 Cambarus bartonii in western New York, but did not describe the 

 species at the time or subsequently. 



BIBLIOGRAPHY. 

 Ellis, Max M. 



1912. A new discodrilid worm from Colorado. Proc. U. S. Nat. Mus., Wash- 

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 Ludwig, Hubert. 



1886. Dr. Johannes Leunis Synopsis der Thierkunde. Ein Handbuch fur 

 hohere Lehranstalten und fur Alle, welche sich wissenschaftlich mit 

 der Naturgeschichte der Thiere beschaftigen wollen. 3. ganzlich 

 umgearbeitete, vermehrte Auflage. vols. 2. xv+1231 pp., 1160 figs. 

 Hannover. 

 Moore, J. Percy. 



1895. Pterodrilus, a remarkable discodrilid. Proc. Acad. Nat. Sci. Phila. (3), 



Oct.-Dec, 1894, pp. 449-454, pi. 13. [Issued Jan. 29.] 

 1895. The anatomy of Bdellodrilus illuminatus, an American discodrilid. Journ. 

 Morphol., Bost., vol. 10 (2), pp. 497-540, pis. 28-32. 

 Moquin-Tandon. 



1846. Monographic de la famille des hirudinees. Nouvelle Edition revue et 

 augmentee. 448 pp. Paris. 

 Odier, Auguste. 



1823. M6moire sur le branchiobdelle, nouveau genre d'annelides de la famille 

 des hirudinees. [Read before Soc. Philomat., Paris, Nov. 1819.] Mem. 

 Soc. d'hist. nat. de Paris, vol. 1, pp. 69-78, pi. 4, figs. 1-24. 



PlERANTONI, UMBERTO. 



1912. Monografia dei Discodrilidae. [Presented before r. 1st. d'Incorag. di 

 Napoli, 22 Giugno 1911.] Ann. Mus. zool. Univ. di Napoli, new ser., vol. 

 3 (24), 29 Feb., 28 pp., figs. 1-20, pi. 5, figs. 1-14. [MS. dated Giugno, 

 1911.] 

 Vejdovsky, Franz. 



1884. System und Morphologie der Oligochaten. 166 pp., 16 pis., 5 figs. Prag. 

 [Not available.] 

 59758°— Proc.N.M. vol.48— 14 13 



