OREGON STATE MONOGRAPHS 



Studies in Zoology 

 Ivan Pratt, Ph.D., Consulting Editor 



No. 1. The Amphibia and Reptilia of Oregon, by Kenneth Gordon 



No. 2. Birds of Oregon, by Ira N. Gabrielson and Stanley G. 

 Jewett 



No. 3. An Annotated Check List of the Gastropods of Cape Arago, 

 Oregon, by Myra Keen and Charlotte S. Doty 



No. 4. Key to the Nests of the Pacific Coast Birds, by Elmo M. 

 Stevenson 



No. 5. The Natural History and Behavior of the Western Chip- 

 munk and the Mantled Ground Squirrel, by Kenneth 

 Gordon 



No. 6. The Marine Annelids of Oregon, by Olga Hartman and 

 Donald Reish 



No. 7. The Sponges of the West Central Pacific, by M. W. de 

 Laubenfels 



No. 8. Marine Amphipoda of Oregon, by J. Laurens Barnard 



No. 9. Organization, Histology, and Circulatory Pattern of the 

 Near-term Placenta of the Guinea Baboon, Papio cyno- 

 cephalus, Demerest, by Howard E. Hillemann 



No. 10. Determination of Some Predator Species by Field Signs, 

 by Arthur S. Einarsen 



No. 11. Trematodes of the Pacific Northwest, An Annotated Cata- 

 log, by Ivan Pratt and James E. McCauley 



