Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
3 Dec.
Calif.: Contra Costa Co.
Objective: Determine eastward limits of
distribution of Taricha torosa and westward
limits of Ambystoma in vicinity of
Walnut Creek. Taricha taken at area
1½ mi. S, ½ mi. W Walnut Creek; Ambystoma
as before 1½ mi. W.E Walnut Creek.
Other species collected or noted:
single subadult
Rana aurora - 3 mi. W Mt Diablo,
1500 ft
Aneides lugubris - 5 or 6 - ½ mi. S,
2 mi. W Mt Diablo. All together.
Ensatina eschscholtzii - Single animal
1 mi. S, ½ mi. W Mt. Diablo.
Bufo boreas. Not common. Few
widely scattered individuals.
Hyda regilla. Seen only in residential
areas near Lafayette.
Weather: Heavy steady rain during
late afternoon and into evening
clearing about 2230 hrs. Not
cold.
31 Dec.
Calif.: Contra Costa Co.
Visited study areas of Taricha, at
Lafayette 1450-1520, Pinchurst 1540-
1555 hrs. No Taricha.
18 Oct. 1959 Calif.: Alameda Co., Berkeley
A plan has been formulated for the
determination of the ranges of Ambystoma
and Taricha in the East Bay Area.
It would appear from our present
knowledge that these two animals are
mutually exclusive in regard to areas
occupied in the Bay Area. Immediate