U6 BREEDING HABITS OF AMPHIBIA 



Bragg, A. N., 19i)-4 - "Egg laying in leopard frogs." Proc. Oklahoma Acad. Scl. 2k. 

 Branln, M, L., 1955 - "Courtship activities and extra seasonal ovulation in the four- toed 



salamander." Copeia. 1955, p. 172. 

 Brown, M. G., 1914-2 - "An adaptation in Amhlystoma opacum emtryos to development on land." 



Am. Nat. 76:222. 

 Conturosvill, P. S., 1956 - "Experiments in changes of sexual cycle in certain tailless 



amphihia." C. B. (Doklady) Acad. Scl. I'U.R.S.S. 11:125. 

 Coates, C. W. & A. I. Welsman, 19^1+ - "Pregnancy test frogs being hred at will." Jour, 



Am. Med. Ass'n. 12i*:l+6l. 

 DeAllende, I. L. C, 1958 - "Aparato sexual femenino del Bufo arenarum. " Inst, de 



Fisiologia Fac. de Cienclas Medicos Cardoba (Argentina). 

 Dwnn, E. E., I926 - "The salamanders of the family Plethodontidae, " 



Evans, H. M. & K. S. Bishop, I925 - "Existence of hitherto unknown dietary factor essen- 

 tial for reproduction." Jour. Am. Med. Ass'n. 81:889. 

 Flower, S. S., 1925 - "Contributions to our knowledge of the duration of life In verte- 

 brate animals. II. Batraclens." Proc. Zool. Soc. London. 1925:269. 

 Force, E. P., 1955 - "The age of the attainment of sexual maturity of the leopard frog, 



Eana pipiens In Northern Michigan." Copeia. 5:128. 

 Francis, E. T. B. , 195'*- - "The anatomy of the salamander." Oxford Univ. Press. 

 Galgano, M., 19''-5 - "Trattl fondamentall del ciclo sessuale annuale negll Anfibi del 



nostri climl," Boll, di Zool. lU:57. 

 Gltlin, G., 19^1 - "Seasonal variations and sexual differences in the fat bodies and other 



fat deposits of Xenopus laevls." S. Afr. Jour. Med. Sci. 6:156 (see ibid, 7:l6). 

 Glass, F. M. & B. Bugh, l^kk- - "Seasonal study of the normal and pituitary- stimulated frog 



(Rana pipiens). I. Testes and thumb pad." Jour, Morph. 7'+:'+09. 

 Green, H. T., 1925 - "The egg laying of the purple salamander (Gryinophilus) . " Copeia. 



Ul:52. 

 Green, N. B., 1958 - "The breeding habits of Pseudacris brachyphona with a description of 



the eggs and tadpole." Copeia. #2, p. 79, 

 Hlnsche, G. , I926 - "ITber Brunst- und Kopulationarealrtlonen des Bufo vulgaris." Zeitschr. 



vergl. Physiol, h-.'^dh. 

 Hisaw. F. L. Sb E. 3. Astwood, I9I+2 - "The physiology of reproduction." Ann. Rev. Physiol. 



4:505. 

 Hitchcock, H. B., 1959 - "Notes on the newt Trlturus vlrldescens. " Herpetologlca. l:lU9. 

 Ifft, J. D. , X^hl - "The effect of environmental factors on the sperm cycle of Trlturus 



vlrldescens." Biol. Bull. 85:111. 

 Kauffeld, C. F. , 1957 - "The status of the leopard frogs, Rana brachycephala and Rana 



pipiens." Herpetologlca, l:81^. 

 Kumpf, K. F., I95U - "The courtship of Amblystoma tigrlnum. " Copeia, 195*+, P- 7- 

 Lantz, L. A., 1950 - "Notes on the breeding habits and larval development of A. opacum." 



Ann. Am. Mus. Nat. Hist. 5:522. 

 Landgrebe, F. W. & G. L. Purser, I9I+I - "Breeding of Xenopus in the laboratory." Nature. 



1U8:115. 

 Liu, C. C, 1951 - "Sexual behavior in the Siberian toad, Bufo raddei and the pond frog, 



Rana nigromaculata . " Peking Nat. Hist. Bull. 6:1+5. 

 Moore, J. A., V^hk - "Geographical variation in Bana pipiens Schreiber of Eastern North 



America." Bull. Am. Mus. Nat. Hist. 82:51+9. 

 Noble, G, K,, I95I - "The Biology of the Amphibia," McGraw-Hill, N. Y, 

 Noble, G, K, & L. B, Aronson, I9I+2 - "The sexual behavior of Anura. I. The normal mating 



pattern of Bana pipiens," Bull, Am, Mus, Nat. Hist. 80:127. 

 Noble, G. K. & M. K. Brody, 1955 - "Observations on the life history of the marbled 



salamander, A. opacum." Zoologica. 11:#8. 

 O'Donnell, D. J., 1957 - "Natural history of the amblystomld salamanders of Illinois." 



Am. Midland Nat. 18:1065. 

 Pope, C, H. , I9I+I+ - "Amphibians and Beptiles of the Chicago area." Chicago Museum Nat. 



Hist. 

 Rostand, J., 1951+ - "Toads and toad life." Methuen & Company, London. 

 Savage, B. W., I95I+ - "The breeding behavior of the common frog Bana temporaria and of the 



common toad Bufo bufo." Proc. Boy. Soc. London. 1:55. 

 Savage, B. M., I955 - "The Influence of external factors on the spawning date and migra- 

 tion of the common frog, Bana temporaria." Zool. Soc. London. 1955. 

 Schmidt, K. P., I958 - "A geographic variation gradient in frogs." Zool. series of Field 



Museum. 20:577- 



