4. 7";f/egj^g^^ q£ Freshwater Ecosystems Identification 

 Manual No. 1 FRESHWATER PLANARIANS (TURBELLARIANS) OF NORTH 

 AMERICA^ 



SELECTED WATER 

 RESOURCES ABSTRACTS 



INPUT TRANSACTION FORM 



;. Report No. 



J. Accession No. 



w 



7. Author(s) 



Kenk, R 



9. Organization 



Smithsonian Institution 

 Washington, D. C. 



5. Report Date 



6. 



8. Performing Organization 

 Report No. 



10. Project No. 



18050 ELD 



II. Contract/Grant No. 

 14-12-894 



13. Type of Report and 

 Period Covered 



12. Sponsoring Organization 

 IS. Supplementary Notes 



16. Abstract 



A key is presented for the identification of the species of North American 



freshwater triclads or planarians known at present. Introductory chapters 



deal with the collecting, culturing, preservation, study, and general organisation 



and life cycle of planarians. The key is followed by a listing of the species 



and subspecies, giving their distinguishing characteristics, ecological requirements, 



and geographical ranges. Illustrations depict the external appearance and diagrams 



of the reproductive organs of the individual taxa. The principal literature for 



each species is indicated and listed in the appended bibliography of 65 items. An 



index of the generic and specific names and synonyms concludes the report. One 



new subspecies, Polyaelis coronata brevipenis is established for L. H. Hyman's 



Polyaelis coronata. 



na. Descriptors *k(\uatic fauna. Life cycles, Preservation, Distribution. 



nb. Identifiers *itientif ication manual, *Illustrated key, *Freshwater planarians, 

 *Triclads, *Turbellaria, *North America, Species list. Collection, Culture, 

 Anatomy, Distinguishing characteristics. Ecological requirements. 



I7C.COWRR Field & Croup lOA 



IS. Availability 



19. Security Class. 

 (Report) 



20. Security Class. 

 (Page) 



21. No. of 

 Pages 



22. Price 



Send To : 



WATER RESOURCES SCfENTIFIC INFORMATION CENTER 

 US DEPARTMENT OF THE INTERIOR 

 WASHINGTON. D C 20240 



Abstractor Roman Kenk 



^Institution Smithsonian Institution 



WRSIC102{REV JUNE 1971) 



o U. S. GOVERNMENT PRINTING OFFICE : 1972 O - 467-101 



