Grams.

Miscellaneous portions of _green plants_ of mixed species,
_no seeds_ 5

Representing minimum for any one of the 22 burrows studied. Active
storage does not begin until September.

DEN 16.

October 17, 1919. In good grass, but mound overrun by a large
_Apodanthera_ vine.

Species stored. Per cent. Grams.

Aristida divaricata 90 to 95 }
Chamaecrista leptadenia 10 to 5 } 58
Bouteloua rothrockii Tr. }
Prosopis velutina 200
Apodanthera undulata 55
---
Total 313

Five species represented. Two species, _Apodanthera_, and _Chamaecrista
leptadenia_, new to storage records. Several whole fruits of
_Apodanthera_, about 2 inches in diameter, stored in addition to seeds
alone; seeds of this form not previously noted in burrows, but very
abundant in this one, indicating importance of the factor of
accessibility in storage.

DEN 19.

October 31, November 1, 1919. In good grass. Entire burrow system mapped
(Fig. 2, p. 29).

Species stored. Per cent. Grams.

Aristida spp. (probably mostly _divaricata_) 98 }
Eriogonum sp Tr. }
Bouteloua rothrockii 1 } 1,813
Bouteloua aristidoides 1 }
Panicum sp Tr. }
Prosopis velutina 1,213
-----
Total 3,026

Five species represented, in addition to those of _Aristida_. Largest
storage of _Prosopis_ found. Mound was near a good-sized mesquite tree.
No storage in subsidiary burrows.

DEN 21.

January 31, 1920. Male trapped here night of January 29, and suckling
female trapped at same place and same opening of mound, night of January
30. Burrow excavated to secure young, which were found in special nest
chamber.

Species st