Kenk, R. (1970b). Freshwater Triclads (Turbellaria) of North America. 



III. Sphalloplana weingavtnevi New Species from a Cave in 



Indiana. Proceedings of the Biotogioat Society of Washington^ 



83:313-320. 

 (1970c). Freshwater Triclads (Turbellaria) of North America. IV. 



The Polypharyngeal Species of Phagooata. Smithsonian Contributions 



to Zoology, no. 80. 17 pp. 

 Komarek, J. (1925). Was ist Planaria polyohroa und Planaria lugubris? 



Zoologisaher Anzeiger, 65:29-33. 

 Leidy, J. (1851). Helminthological Contributions. II. Proceedings of 



the Academy of Natural Sciences of Philadelphia, 5:224-227. 

 (1857). In W. Stimpson, Prodromus Descriptionis Animalium Ever- 



tebratorum .... Proceedings of the Academy of Natural Sciences of 



Philadelphia, 9:19-31. 

 Mitchell, R. W. (1968). New Species of Sphalloplana (Turbellaria: 



Paludicola) from the Caves of Texas and a Reexamination of the Genus 



Speophila and the Family Kenkiidae. Annales de Speleologie, 



23:597-620. 

 Packard, A. S. (1879). Zoology for Students and General Readers. 



Henry Holt and Co., New York, viii-t-719 pp. 

 Peaslee, L. D. (1910). Studies on Phagooata gracilis. University 



Studies Published by the University of Cincinnati, series 2, 



6(2):1-41, 3 plates. 

 Reynoldson, T. B. , and Bellamy, L. S. (1970). The status of Dugesia 



lugubris and D. polychroa (Turbellaria, Tricladida) in Britain. 



Journal of Zoology (London), 162:157-177. 

 Schmidt, 0. (1861). Ueber PlanaHa torva Autorum. Zeitschrift fur 



wissenschaftliche Zoologie, 11:89-94, plate 10. 

 Sivickis, P. B. (1923). Studies on the Physiology of Reconstitution 



in Planaria lata, with a Description of the Species. Biological 



Bulletin, 44:113-152. 

 Stevens, N. M. (1904). On the Germ Cells and the Embryology of Planaria 



simplissima. Proceedings of the Academy of Natural Sciences of 



Philadelphia, 56:208-220, plates 13-16. 

 Stevens, N. M. , and Boring, A. M. (1906). Planaria morgani n, sp. 



Proceedings of the Academy of Natural Sciences of Philadelphia, 



58:7-9, plate 1. 

 Stringer, C. E. (1909). Notes on Nebraska Turbellaria with Descriptions 



of Two New Species. Zoologisoher Anzeiger, 34:257-262. 

 Woodworth, W. M. (1891). Contributions to the Morphology of the Tur- 

 bellaria. I. On the Structure of Phagocata gracilis, Leidy. 



Bulletin of the Museum of Comparative Zoology at Harvard College, 



21:1-44, plates 1-4. 

 (1896a). Preliminary Report on Collections of Turbellaria from 



Lake St. Clair and Charlevoix, Michigan. Bulletin of the Michigan 



Fish Commission, 6:94-95. 

 (1896b). Report on the Turbellaria Collected by the Michigan State 



Fish Commission during the Summers of 1893 and 1894. Bulletin of 



the Museum of Comparative Zoology at Harvard College, 29:239-244, 

 1 plate. 



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