Acknowledgements 



We are especially grateful to Jim Roscoe (BLM 

 Dillon Field Office) and Danny Gomez (Red Rock 

 Lakes National Wildlife Refuge) for their interest 

 and support of this project on BLM and USFWS 

 lands. Through their guidance and on-the-spot 

 orientation, field work was more productive than it 

 might otherwise have been. We thank Stan 

 Vlahovich (Montana DNRC) and Bill and Judy 

 Staudenmeyer for permission to visit state and 

 private lands, respectively, under their steward- 

 ship. Tim Swanson(TNC) provided useflil 

 landowner contacts for the Centennial Valley 

 Sandhills area. 



For help with specimen identification we thank 

 Dave Dyer (University of Montana: shrews), 

 Kerry Foresman (University of Montana: shrews), 

 Mike Ivie (Montana State University: tiger 

 beetles). Will Kerling (Missoula: butterflies), and 

 Steve Kohler (Montana DNRC: butterflies). For 

 permission to examine museum collections of tiger 

 beetles we thank Frank Merikel (University of 

 Idaho) and Rich Zack (Washington State Univer- 



sity). Ryan Rauscher (Montana FWP) provided 

 records of Pygmy Rabbit in the sandhills area, and 

 Dennis Flath (Montana FWP) shared his knowl- 

 edge of small mammal records (especially shrews 

 and pocket mice) from the Centennial Valley and 

 elsewhere in Beaverhead County. 



We benefited from the assistance of Montana 

 Natural Heritage Program staff, including Cedron 

 Jones who produced the maps for this report, and 

 Martin Miller who entered field data into Heritage 

 Program databases. John Carlson, Joy Lewis, 

 and Sue Crispin made many useful editorial 

 suggestions on earlier versions of this report, 

 making the final product more readable. We are 

 also indebted to Jim Roscoe (BLM), Danny 

 Gomez (USFWS), Randy Gazda (USFWS), and 

 Brian Martin (TNC) for their comments on a near- 

 final draft that helped rectify any factual errors or 

 oversights. Katrina Scheuerman (Montana State 

 Library, NRIS) patiently guided the transformation 

 of this report from an ugly draft into a professional 

 final product. We thank them all. 



