Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
JESimpson,
1938.
Perognathus flavus
270±ft., Rancho de Costa Rica, Rio Sonora, Sonora.
May 2, 1938.
Topotypes of P.f. sonoriensis Goldman taken in wheat-field next to corn-field and bordered by mesquite:
six: ♂ 269, 286, 287 and ♀ 288, 289, 290. ♀ 288 and ♀ 289 were moulting. These are only topotypes known; only the type specimens constituting the type-series.
May 3, 1938.
Six more topotypes of P.f. sonoriensis taken in corn and wheat-fields as above: ♂ 291-94; ♀ 296-97. ♀ 296 was moulting.