Index. Pp. 651-681.

*Vol. 4. (Complete) American weasels. By E. Raymond Hall. Pp. 1-466, 41 plates, 31 figures in text. December 27, 1951.

Vol. 5. Nos. 1-37 and index. Pp. 1-676, 1951-1953.

*Vol. 6. (Complete) Mammals of Utah, _taxonomy and distribution_. By Stephen D. Durrant. Pp. 1-549, 91 figures in text, 30 tables.

August 10, 1952.

Vol. 7. Nos. 1-15 and index. Pp. 1-651, 1952-1955.

Vol. 8. Nos. 1-10 and index. Pp. 1-675, 1954-1956.

Vol. 9. Nos. 1-23 and index. Pp. 1-690, 1955-1960.

Vol. 10. Nos. 1-10 and index. Pp. 1-626, 1956-1960.

Vol. 11. Nos. 1-10 and index. Pp. 1-703, 1958-1960.

Vol. 12. *1. Functional morphology of three bats: Eumops, Myotis, Macrotus. By Terry A. Vaughan. Pp. 1-153, pls. 1-4, 24 figures in text. July 8, 1959.

*2. The ancestry of modern Amphibia: a review of the evidence. By Theodore H. Eaton, Jr. Pp. 155-180, 10 figures in text. July 10, 1959.

3. The baculum in microtine rodents. By Sidney Anderson.

Pp. 181-216, 49 figures in text. February 19, 1960.

*4. A new order of fishlike Amphibia from the Pennsylvanian of Kansas. By Theodore H. Eaton, Jr., and Peggy Lou Stewart. Pp. 217-240, 12 figures in text. May 2, 1960.

5. Natural history of the Bell Vireo, Vireo bellii Audubon.

By Jon C. Barlow. Pp. 241-296, 6 figures in text.

March 7, 1962.

6. Two new pelycosaurs from the lower Permian of Oklahoma.

By Richard C. Fox. Pp. 297-307, 6 figures in text.

May 21, 1962.

7. Vertebrates from the barrier island of Tamaulipas, Mexico. By Robert K. Selander, Richard F. Johnston, B. J. Wilks, and Gerald G. Raun. Pp. 309-345, pls. 5-8.

June 18, 1962.

8. Teeth of edestid sharks. By Theodore H. Eaton, Jr.

Pp. 347-362, 10 figures in text. October 1, 1962.

9. Variation in the muscles and nerves of the leg in two genera of grouse (Tympanuchus and Pedioecetes).

By E. Bruce Holmes. Pp. 363-474, 20 figures in text.

October 25, 1963. $1.00.

10. A new genus of Pennsylvanian fish (Crossopterygii, Coelacanthiformes) from Kansas. By Joan Echols.

Pp. 475-501, 7 figures in text. October 25, 1963.

11. Observations on the Mississippi kite in southwestern Kansas. By Henry S. Fitch. Pp. 503-519. October 25, 1963.

12. Jaw musculature of the Mourning and White-winged doves.

By Robert L. Merz. Pp. 521-551, 22 figures in text.

October 25, 1963.

13. Thoracic and coracoid arteries in two families of birds, Columbidae and Hirundinidae. By Marion Anne Jenkinson.

Pp. 553-573, 7 figures in text. March 2, 1964.

14. The breeding birds of Kansas. By Richard F. Johnston.

Pp. 575-655, 10 figures in text. May 18, 1964. 75 cents.

15. The adductor muscles of the jaw in some primitive reptiles. By Richard C. Fox. Pp. 657-680, 11 figures in text. May 18, 1964.

Index. Pp. 681-694.

Vol. 13. 1. Five natural hybrid combinations in minnows (Cyprinidae).

By Frank B. Cross and W. L. Minckley. Pp. 1-18.

June 1, 1960.

2. A distributional study of the amphibians of the Isthmus of Tehuantepec, Mexico. By William E. Duellman.

Pp. 19-72, pls. 1-8, 3 figures in text. August 16, 1960.

50 cents.

3. A new subspecies of the slider turtle (Pseudemys scripta) from Coahuila, Mexico. By John M. Legler. Pp. 73-84, pls. 9-12, 3 figures in text. August 16, 1960.

*4. Autecology of the copperhead. By Henry S. Fitch.

Pp. 85-288, pls. 13-20, 26 figures in text.

November 30, 1960.

5. Occurrence of the garter snake, Thamnophis sirtalis, in the Great Plains and Rocky Mountains. By Henry S. Fitch and T. Paul Maslin. Pp. 289-308. 4 figures in text.

February 10, 1961.

6. Fishes of the Wakarusa River in Kansas. By James E.

Deacon and Artie L. Metcalf. Pp. 309-322, 1 figure in text. February 10, 1961.

7. Geographic variation in the North American cyprinid fish, Hybopsis gracilis. By Leonard J. Olund and Frank B.

Cross. Pp. 323-348, pls. 21-24, 2 figures in text.

February 10, 1961.

8. Descriptions of two species of frogs, genus Ptychohyla; studies of American hylid frogs, V. By William E.

Duellman. Pp. 349-357, pl. 25, 2 figures in text.

April 27, 1961.

9. Fish populations, following a drought, in the Neosho and Marais des Cygnes rivers of Kansas. By James Everett Deacon. Pp. 359-427, pls. 26-30, 3 figures in text.

August 11, 1961. 75 cents.

10. North American recent soft-sh.e.l.led turtles (Family Trionychidae). By Robert G. Webb. Pp. 429-611, pls. 31-54, 24 figures in text. February 16, 1962. $2.00.

Index. Pp. 613-624.