ored. Grams.

Aristida spp. (intimate mixture of undetermined species) 1,115
Eschscholtzia mexicana (from spring of 1919) 48
Opuntia (prickly pear, seeds only, no fruits) 10
-----
Total 1,173

Three species represented. Prickly pear hitherto found as fruits only.

DEN 22.

January 1, 1921. Rather good grass growth here in summer of 1920. Burrow
typical, sandy soil. Two skulls of former residents unearthed.

Species stored. Grams.

Aplopappus gracilis (some B. rothrockii) 1,030
Astragalus nuttallianus 630
Bouteloua rothrockii (some A. gracilis) 530
Sida diffusa 30
Solanum elaeagnifolium (282 fruits) 53
Loeflingia pusilla Tr.
Bouteloua aristidoides Tr.
Plantago ignota Tr.
Lupinus sparsiflorus Tr.
Old storage (mostly Bouteloua aristidoides with traces of B.
rothrockii and Aristida divaricata) 60
-----
Total 2,333

Eleven species represented. First instance of quantity storage of
_Aplopappus gracilis_. First occurrence of _Loeflingia pusilla_ and
_Astragalus nuttallianus_.

DEN 24.

November 8, 1921. On mesa northeast of Albuquerque, N. Mex., near base
of Sandia Mountains. Fair grass growth here during preceding summer.

Species stored. Grams.

Sporobolus cryptandrus strictus 5,455
Salsola pestifer 295
-----
Total 5,750

Two species represented. The heads of _Sporobolus cryptandrus strictus_
are retained to a great extent within the lea