1 1 ? CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th See. 



Page 



D. DISTRIBUTION AND HABITS OF PHBNACOMYS LON- 



GICA UD US 136 



I Distribution 136 



1 IN TIME 136 



2 IN SPACE 136 



II Habits 138 



1 GENERAL HABITAT 138 



2 KINDS OF TREES INHABITED 139 



3 COLONIAL TENDENCY 140 



4 OBSERVED MOVEMENTS 141 



5 VOICE 142 



6 FOOD AND DRINK 142 



7 HOME RANGE OF THE INDIVIDUAL 144 



8 HIBERNATION 144 



9 STUDIES OF THE NEST 145 



(1) Altitude above the ground 145 



(2) Position in trees >. 145 



(3) General size 145 



(4) Skeleton, form and makeup 146 



(a) Possible parasitism of Phenacomys lon- 



gicaudus 146 



(b) Form and composition of nests 146 



(c) The inner nest cavity 149 



(5) Large nests the work of years 150 



(6) Desertion of nests 150 



10 BREEDING HABITS AND FAMILY RELATIONS 151 



(1) Time of breeding and size of families ISI 



(2) Preponderance of females 152 



(3) Family relations 153 



E. THE POSSIBLE ANCESTRY OF PHBNACOMYS LONGI- 



CAUDUS 154 



F. SUMMARY 156 



G. LIST OF WORKS CONTAINING IMPORTANT MATE- 



RIAL RELATIVE TO THE GENUS 158 



