DITMARS, Raymond L.:  REPTILES OF THE WORLD. THE CROCODILIANS, LIZARDS, SNAKES, TURTLES AND TORTOISES OF THE EASTERN AND WESTERN HEMISPHERES.  New York.  1941.  Macmillan and Co.  24x26. 321p.  89 láminas. Fotogr. Enc. Tela ed.