No. 1387. Walter C. Brown. 1949 A new frog of the genus Platymantis from the Solomon Islands. 4 pp.

No. 1416. E. R. Dunn. 1949 Notes on the South American frog genus Edalorhina. 10 pp.

No. 1418. Walter C. Brown and G. S. Myers. 1949 A new frog of the genus Cornufer from the Solomon Islands, with notes on the endemic nature of the Fijian frog fauna. 10 pp.

No. 1419. E. R. Dunn. 1949 Notes on South American frogs of the family Microhylidae. 21 pp.

No. 1437. E. H. Taylor. 1949 New or unusual Mexican amphibians. 21 pp.

No. 1456. Robert Mertens. 1950 Notes on some Indo-Australian monitors (Sauria, Varanidae). 7 pp.

No. 1493. L. T. Evans. 1951 Field study of the social behavior of the black lizard, Ctenosaura pectinata. 26 pp.

No. 1571. Carl Gans and Masamitsu Oshima. 1952 Adaptations for egg eating in the snake Elaphe climacophora (Boie). 16 pp.

No. 1627. Walter C. Brown. 1953 Results of the Archbold expeditions. No. 69. A review of New Guinea lizards allied to Emoia baudini and Emoia physicae (Scincidae). 25 pp.

No. 1687. J. A. Tihen. 1954 Gerrhonotine lizards recently added to the American Museum collection, with further revisions of the genus Abronia. 26 pp.

No. 1708. Coleman J. Goin. 1955 Description of a new subspecies of the frog Eleutherodactylus ricordi from the Bahama Islands. 7 pp.

No. 1722. Albert P. Blair. 1955 Distribution, variation, and hybridization in a relict toad (Bufo microscaphus) in southwestern Utah. 38 pp.

No. 1726. Roger Conant. 1955 Notes on three Texas reptiles, including an addition to the fauna of the state. 6 pp.

No. 1734. Neil D. Richmond. 1955 The blind snakes (Typhlops) of Bimini, Bahama Islands, British West Indies, with description of a new species. 7 pp.

No. 1748. Georg Haas. 1955 The systematic position of Loxocemus bicolor Cope (Ophidia). 8 pp.

No. 1762. Richard G. Zweifel. 1956 Two pelobatid frogs from the Tertiary of North America and their relationships to fossil and Recent forms. 45 pp.

No. 1766. Richard G. Zweifel. 1956 Results of the Archbold expeditions. No. 72. Microhylid frogs from New Guinea, with descriptions of new species. 49 pp.

No. 1781. Roger Conant. 1956 A review of two rare pine snakes from the Gulf coastal plain. 31 pp.

No. 1783. James A. Peters. 1956 An analysis of variation in a South American snake, Catesby's snail-sucker (Dipsas catesbyi Sentzen). 41 pp.

No. 1785. Richard G. Zweifel. 1956 Notes on microhylid frogs, genus Cophixalus, from New Guinea. 8 pp.

No. 1793. Archie Carr and D. K. Caldwell. 1956 The ecology and migrations of sea turtles. 1. Results of field work in Florida. 23 pp.

No. 1813. Richard G. Zweifel. 1956 A survey of the frogs of the augusti group, genus Eleutherodactylus. 35 pp.

No. 1819. Hans Elias and Jack Shapiro. 1957 Histology of the skin of some toads and frogs. 27 pp.

No. 1836. George B. Rabb and Ellis B. Hayden, Jr. 1957 The Van Voast-American Museum of Natural History Bahama Islands expedition. Record of the expedition and general features of the islands. 53 pp.

No. 1838. Albert Schwartz. 1957 Chorus frogs (Pseudacris nigrita LeConte) in South Carolina. 12 pp.

No. 1839. Albert Schwartz. 1957 A new species of boa (genus Tropidophis) from western Cuba. 8 pp.

No. 1842. Beverly A. Limbaugh and E. Peter Volpe. 1957 Early development of the Gulf coast toad, Bufo valliceps Wiegmann. 32 pp.

No. 1851. James A. Peters. 1957 Taxonomic notes on Ecuadorian snakes in the American Museum of Natural History. 13 pp.

No. 1873. Albert Schwartz. 1958 Four new frogs of the genus Eleutherodactylus (Leptodactylidae) from Cuba. 20 pp.

No. 1883. Robert C. Stebbins. 1958 A new alligator lizard from the Panamint Mountains, Inyo County, California. 27 pp.

No. 1895. Richard G. Zweifel. 1958 Results of the Puritan-American Museum of Natural History expedition to western Mexico. 2. Notes on reptiles and amphibians from the Pacific coastal islands of Baja California. 17 pp.

No. 1896. Richard G. Zweifel. 1958 Results of the Archbold expeditions. No. 78. Frogs of the Papuan hylid genus Nyctimystes. 51 pp.

No. 1926. Albert Schwartz. 1959 A new species of frog of the Eleutherodactylus ricordi group from central Cuba. 16 pp.

No. 1934. Janis A. Roze. 1959 Taxonomic notes on a collection of Venezuelan reptiles in the American Museum of Natural History. 14 pp.

No. 1948. Herndon G. Dowling. 1959 Apical papillae on the hemipenes of two colubrid snakes. 7 pp.

No. 1949. Richard G. Zweifel. 1959 The provenance of reptiles and amphibians collected in western Mexico by J. J. Major. 9 pp.

No. 1953. Richard G. Zweifel. 1959 Additions to the herpetofauna of Nayarit, Mexico. 13 pp.

No. 1961. Richard G. Zweifel. 1959 Snakes of the genus Imantodes in western Mexico. 18 pp.

No. 1979. Walter Auffenberg and Coleman J. Goin. 1959 The status of the salamander genera Scapherpeton and Hemitrypus of Cope. 12 pp.

No. 1998. Richard G. Zweifel. 1960 A new species of lizard (genus Cnemidophorus) from Mexico. 8 pp.

No. 2012. Richard G. Zweifel. 1960 A new microhylid frog from the Adelbert Mountains of New Guinea. 7 pp.

No. 2017. Georg Haas. 1960 On the trigeminus muscles of the lizards Xenosaurus grandis and Shinisaurus crocodilurus. 54 pp.

No. 2023. Richard G. Zweifel. 1960 Results of the 1958-1959 Gilliard New Britain Expedition. 3. Notes on the frogs of New Britain. 27 pp.

No. 2056. Richard G. Zweifel. 1961 Larval development of the tree frogs Hyla arenicolor and Hyla wrightorum. 19 pp.

No. 2060. Roger Conant. 1961 A new water snake from Mexico, with notes on anal plates and apical pits in Natrix and Thamnophis. 22 pp.

No. 2064. C. M. Bogert and W. G. Degenhardt. 1961 An addition to the fauna of the United States, the Chihuahua ridge-nosed rattlesnake in New Mexico. 15 pp.

No. 2077. William Hosmer. 1962 A new leptodactylid frog of the genus Notaden from northern Australia. 8 pp.

No. 2087. Richard G. Zweifel. 1962 Results of the Archbold expeditions. No. 83. Frogs of the microhylid genus Cophixalus from the mountains of New Guinea. 26 pp.

No. 2091. Archie Carr and Harold Hirth. 1962 The ecology and migrations of sea turtles, 5. Comparative features of isolated green turtle colonies. 42 pp.

No. 2100. C. M. Bogert. 1962 Isolation mechanisms in toads of the Bufo debilis group in Arizona and western Mexico. 37 pp.

No. 2105. Carl Gans. 1962 Notes on amphisbaenids (Amphisbaenia, Reptilia). 5. A redefinition and a bibliography of Amphisbaena alba Linne. 31 pp.

No. 2113. Richard G. Zweifel. 1962 A systematic review of the microhylid frogs of Australia. 40 pp.

No. 2122. Roger Conant. 1963 Evidence for the specific status of the water snake Natrix fasciata. 38 pp.

No. 2127. Carl Gans. 1963 Notes on amphisbaenids (Amphisbaenia, Reptilia). 7. Redescription and redefinition of Amphisbaena mitchelli Procter and Amphisbaena slevini Schmidt from the middle and lower Amazon, Brazil. 22 pp.

No. 2128. Carl Gans. 1963 Notes on amphisbaenids (Amphisbaenia, Reptilia). 8. A redescription of Amphisbaena stejnegeri and the description of a new species of Amphisbaena from British Guiana. 18 pp.

No. 2141. Richard G. Zweifel. 1963 Results of the Archbold expeditions. No. 84. New microhylid frogs (Baragenys and Cophixalus) from the Louisiade Archipelago, New Guinea. 10 pp.