24 



NORTH AMERICAIT FAUNA. 



[no. 39, 



semiarid plains and stony slopes of the great mountain ranges, and 

 even up through the mountain forests to timber line and often far 



B2047-122 



Fig. 6. — ^Map showing distribution of certain species and subspecies of Thomomys, and localities at which 



specimens were collected. 



21. per pes. 



22. operarius. 



23. fisher i. 



above on the peaks and crests of high ranges. That these gophers 

 however, prefer comfortable conditions and thrive on mellow 



1. bottx. 



6. 



mewa. 





11. pallescens. 



16. jacinteus. 



2. minor. 



7. 



pascalis. 





12, alpinus. 



17. cdbezonse. 



3. laticeps. 



8. 



angularis. 





13. awahnee. 



18. puertx. 



4. leucodon. 



9. 



diaboli. 





14. neglectus. 



19. perpallidus. 



5. navus. 



10. 



infrapalUdv 





15. altivallis. 



20. alhatus. 



