TABLE 4.--YIELD OF 600 TRAP-NIGHTS IN GREASEWOOD CHAPARRAL.

======================================================================

| Number | Per cent

| | of total

--------------------------------------------------+--------+----------

Perognathus californicus dispar | 4 | 10.0

Dipodomys agilis agilis | 4 | 10.0

Peromyscus californicus insignis | 25 | 62.5

Neotoma fuscipes macrotis | 7 | 17.5

--------------------------------------------------+--------+----------

Heteromyids are evidently absent from the upper parts of the chaparral

association, but cricetid rodents are common there beneath heavy clumps

of lilac and in the talus beneath oaks and bay trees. The following list

gives the mammals taken in the course of about 200 trap nights in the

granite talus one half mile northwest of the mouth of Icehouse Canyon,

at 5200 feet elevation.

TABLE 5.--YIELD OF 200 TRAP-NIGHTS IN THE UPPER PART OF THE CHAPARRAL

ASSOCIATION.

======================================================================

| Number | Per cent

| | of total

--------------------------------------------------+--------+----------

Eutamias merriami merriami | 3 | 6.3

Peromyscus boylii rowleyi | 38 | 79.2

Neotoma lepida intermedia | 2 | 4.2

Neotoma fuscipes macrotis | 5 | 10.4

--------------------------------------------------+--------+----------

The gray fox is the dominant carnivore of the chaparral association and

forages widely in all habitats.

Mammals of the San Gabriel Mountains of California · 第 25 / 151 题