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, 4 plates, 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 Sydney 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. 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, México. By Robert K. Selander, Richard F. Johnston, B. J. Wilks, and Gerald G. Raun. Pp. 309-345, plates 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. October 25, 1962. $1.00. 10. A new genus of Pennsylvanian fish (Crossopterygii, Coelacanthiformes) from Kansas. By Joan Echols. Pp. 475-501, 7 figures. 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. 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. March 2, 1964. 14. The breeding birds of Kansas. By Richard F. Johnston. Pp. 575-655, 10 figures. 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, México. By William E. Duellman. Pp. 19-72, plates 1-8, 3 figures in text. August 16, 1960. 50 cents. 3. A new subspecies of the slider turtle (Pseudemys scripta) from Coahuila, México. By John M. Legler. Pp. 73-84, plates 9-12, 3 figures in text. August 16, 1960.