Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Weston
1945
1.
Microtus californicus
March 12 West End of Elli Valley, Marin Co., California.
5:30 to 7:30 p.m. I set out 80 snap traps in fresh
water marsh at ocean end of valley. 2 field mice
seen as I moved about. One large ? was caught
30+ seconds after I set the trap. Lots of sign
present. Juncus is dominant form of vegetation.
March 13- Out of 80 traps set last night I caught 5 Microtus
3 were ? ? ?