96 
Roman Kenk 
ACKNOWLEDGMENTS . — Thanks are due to Dr. Cato O. Holler, Jr. 
for his generous collaboration in collecting and shipping the flatworms. 
Dr. John C. Harshbarger of the Smithsonian Institution was helpful in 
the preparation of the photomicrographs, and Dr. Marian H. Pettibone 
kindly reviewed the manuscript. 
LITERATURE CITED 
Cernosvitov, L. 1931. Studien iiber Spermaresorption. III. Die Samenresorption 
bei den Tricladen. Zool. Jahrb. Abt. Anat. Ontog. Tiere 54: 295-332, pi. 5-7. 
Kenk, R. 1977. Freshwater triclads (Turbellaria) of North America. X. Three 
new species of Phagocata from the eastern United States. Proc. Biol. Soc. Wash. 
59:645-652. 
1979. Freshwater triclads (Turbellaria) of North America. XI. Phagocata 
hollen , new species, from a cave in North Carolina. Proc. Biol. Soc. Wash. 
92( 2):389-393. 
Accepted 30 August 1979 
