15492. Dean, B.   On the Hair-like Appendages in the Frog.   American Museum of Natural History, 1912, Bulletin, 31 (29) : 349-352, 2 figures.   Text, minor signs of age discoloration, uncut text in very good condition, rarely seen important early work.    $5.00

12886. Knoble, G. K.   A New Spadefoot Toad from the Oligocene of Mongolia with a Summary of the Evolution of the Pelobatidae.   American Museum of Natural History, 1924, Novitates, 132 : 1-15, 7 figures.   Off-print, minor previous owner marks on front, usual signs of age discoloration, some edge tears and moisture stains, uncut text, still a good study copy.    $5.00

12924. Knoble, G. K.   Two New Fossil Amphibia of Zoogeographic Importance from the Miocene of Europe.   American Museum of Natural History, 1928, Novitates, 303 : 1-13, 6 figures.   Off-print, minor previous owner marks on front, usual signs of use and age discoloration, uncut text in very good condition.    $5.00

12946. Knoble, G. K.   The Fossil Frogs of the Intertrappean Beds of Bmbay, India.   American Museum of Natural History, 1930, Novitates, 401 : 1-13, 3 figures.   Off-print, minor previous owner marks on front, usual signs of use and age discoloration, uncut text in very good condition.    $5.00

13401. Turnbull, W. D. and Turnbull, P. F.   A Recently Discovered Phlegethontia from Illinois.   Field Museum of Natural History, 1955, Fieldiana: Zoology, 37 : 523-535, 1figure and 4 plates.   Printed wraps, minor previous owner marks on front page, minor signs of use and age, text in very good condition.    $8.00

13345. Vaughn, P. P.   Frog-Like Vertebrate from the Lower Permian of Southeastern Utah.   Natural History Museum of Los Angeles County, 1965, Contributions in Science, 87 : 1-18, 1 figure.   Printed wraps, minor signs of use and age, text in very good condition.    $5.00

13355. Dixon, J. R. and Webb, R. G.   A New Syrrhophus from Mexico (Amphibia: Leptodactylidae).   Natural History Museum of Los Angeles County, 1966, Contributions in Science, 102 : 1-5, 1 figure.   Printed wraps, minor previous owner marks on front wrap, minor signs of use and age, text in very good condition.    $5.00

13380. McDiarmid, R. W.   Populational Variation in the Frog Genus Phrynohyas Fitzinger in Middle America.   Natural History Museum of Los Angeles County, 1968, Contributions in Science, 134 : 1-25, 7 figures.   Printed wraps, minor previous owner marks on front wrap, minor signs of use and age, text in very good condition.    $9.00

13395. Heyer, W. R.   The Status of Leptodactylus Pumilio Boulenger (Amphibia, Leptodactylidae) and the Description of a New Species of leptodactylus from Ecuador.   Natural History Museum of Los Angeles County, 1972, Contributions in Science, 231 : 1-8, 4 figures.   Printed wraps, previous owner marks on front wrap, minor signs of use and age, text in very good condition.    $5.00