Arizona \ 
Exp. Sta. J 
LIFE HISTORY OF THE KAXGAEOO EAT. 
23 
Five species represented, in addition to those of Aristida. Largest storage 
of Pi'osopis found. Mound was near a good-sized mesquite tree. No storage in 
subsidiary burrows. 
Dex 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 stored. 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. 
Dex 22. 
January 1. 1921. Rather good grass growth here in summer of 1920. Bur- 
row 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 (2S2 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 Loeflinc/ia pusilla and Astragalus nuttallianus. 
Dex 24. 
November S. 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 leaf sheaths. This necessitates the cutting 
of the stems into suitable lengths for carrying, and the stored material appears to 
be merely cut sections of the stems. Close examination, however, discloses the 
heads within, and shows that as in other instances seed storage is the end 
sought. These pieces are packed beautifully parallel like so many matches. 
