ll. Pp. 357-361. January 21, 1957.

12. Geographic variation in the pocket gopher, Thomomys bottae, in
Colorado. By Phillip M. Youngman. Pp. 363-387, 7 figures in text.
February 21, 1958.

13. New bog lemming (genus Synaptomys) from Nebraska. By J. Knox Jones,
Jr. Pp. 385-388. May 12, 1958.

14. Pleistocene bats from San Josecito Cave, Nuevo Leon, Mexico. By J.
Knox Jones, Jr. Pp. 389-396. December 19, 1958.

15. New Subspecies of the rodent Baiomys from Central America. By Robert
L. Packard. Pp. 397-404. December 19, 1958.

16. Mammals of the Grand Mesa, Colorado. By Sydney Anderson. Pp.
405-414, 1 figure in text. May 20, 1959.

17. Distribution, variation, and relationships of the montane vole,
Microtus montanus. By Emil K. Urban. Pp. 415-511. 12 figures in text, 2
tables. August 1, 1959.

18. Conspecificity of two pocket mice, Perognathus goldmani and P.
artus. By E. Raymond Hall and Marilyn Bailey Ogilvie. Pp. 513-518, 1
map. January 14, 1960.

19. Records of harvest mice, Reithrodontomys, from Central America, with
description of a new subspecies from Nicaragua. By Sydney Anderson and
J. Knox Jones, Jr. Pp. 519-529. January 14, 1960.

20. Small carnivores from San Josecito Cave (Pleistocene), Nuevo Leon,
Mexico. By E. Raymond Hall. Pp. 531-538, 1 figure in text. January 14,
1960.

21. Pleistocene pocket gophers from San Josecito Cave, Nuevo Leon,
Mexico. By Robert J. Russell. Pp. 539-548, 1 figure in text. January 14,
1960.

22. Review of the insectivores of Korea. By J. Knox Jones, Jr., and
David H. Johnson. Pp. 549-578. February 23, 1960.

23. Speciation and evolution of the pygmy mice, genus Baiomys. By Robert
L. Packard. Pp. 579-670, 4 plates, 12 figures in text. June 16, 1960.

Index Pp. 671-690.

Vol. 10. 1. Studies of birds killed in nocturnal migration. By Harrison
B. Tordoff and Robert M. Mengel. Pp. 1-44, 6 figures in text, 2 tables.
September 12, 1956.

2. Comparative breeding behavior of Ammospiza caudacuta and A. maritima.
By Glen E. Woolfenden. Pp. 45-75, 6 plates, 1 figure. December 20, 1956.

3. The forest habitat of the University of Kansas Natural History
Reservation. By Henry S. Fitch and Ronald R. McGregor. Pp. 77-127, 2
plates, 7 figures in text, 4 tables. December 31, 1956.

4. Aspects of reproduction and development in the prairie vole (Microtus
ochrogaster). By Henry S. Fitch. Pp. 129-161, 8 figures in text, 4
tables. December 19, 1957.

5. Birds found on the Arctic