WOODWORTH: ILLINOIS TURBELLARIA. 15 
Leydig, F. 
1864. Tafeln zur vergleichenden Anatomie. Tübingen. 
Oersted, A. 8. 
1844. Entwurf einer systematischen Eintheilung und speciellen Beschrei- 
bung der Plattwürmer, ete. Copenhagen. 
Ott, H. N. 
1892. A Study of Stenostoma leucops O. Schm. Jour. Morph., Vol. VII. 
No. 3, pp. 263-304, Plates XIV.-X VII. 
Schmidt, O. 
1848. Die rhabdocclen Strudelwürmer (Turbellaria rhadocœla) des süssen 
Wassers. Jena. 
Schmidt, O. 
1862. Untersuchungen über Turbellarien von Corfu und Cephalonia. 
Zeitschr. wiss. Zool., Bd. XI. pp. 1-30, Taf. I.-IV. 
Silliman, W. A. 
1885. Beobachtungen über den Süsswasserturbellarien Nordamerikas. 
Zeitschr. wiss. Zool., Bd. XLI. pp. 48-78, Taf. ILL, IV. 
Stimpson, W. 
1857. Prodromus descriptionis animalium evertebratorum quae in Expedi- 
tione ad Oceanum Pacificum, ete. Pars I. Turbellaria dendrocœla. Proc. 
Acad. Nat. Sci. Philad., Vol. IX. pp. 19-81. 
Weltner, W. 
1887. Dendrocælum punctatum Pallas bei Berlin. Sitzungsh. k. Preuss. 
Akad. Wiss., Bd. XXXVIII. pp. 795-804, Taf. VI. 
Wheeler, W. M. 
1894. Syncælidium pellucidum, a New Marine Triclad, Jour. Morph., 
Vol. IX. pp. 167-194, 
Woodworth, W. McM. 
1891. Contributions to the Morphology of the Turbellaria. I. On the 
Structure of Phagocata gracilis Leidy. Bull. Mus. Comp. Zodl., Vol. 
XXI. No. 1, pp. 1-42. 
Woodworth, W. McM. 
1896. Preliminary Report on Collections of Turbellaria from Lake St. Clair 
and Charlevoix, Michigan. Bull. Mich. Fish Commission, No. 5, pp. 94, 
95. 
Woodworth, W. McM. 
1896". Report on the Turbellaria collected by the Michigan State Fish 
Commission during the Summers of 1893 and 1894. Bull. Mus. Comp. 
Zoil., Vol. XXIX. No. 6, pp. 239-243. 
Woodworth, W. McM. 
1896°. Notes on Turbellaria. American Naturalist, Vol. XXX. pp. 1046- 
1049. 
