THE UNIVERSITY OF KANSAS SCIENCE BULLETIN Vol. XXXI, pt. I.] May 1, 1946 [No. 2 A Summary of Mexican Lizards of the Genus Ameiva HOBART M. SMITH and LEONARD E. LAUFE Abstract : The eleven forms of Ameiva known in Mexico are summarized with a key, diagnosis, statements of ranges, lists of localities, tabulations of variation, and discussion of intergradation and characteristics. A possible phylogeny of the races of Ameiva undulata is suggested. CONTENTS PAGE List of Illustrations 8 List of Tables 9 Preface 10 Historical Summary 10 Materials 11 Characters 12 Primary Characters 12 Gulars 12 Preanals 12 Supraocular scales 14 Secondary Characters 14 Pattern 14 Lamellae 15 Femoral pores 18 Median gulars 19 Lateral gulars 20 Preanals 20 Subspecific Sections 21 Phylogeny 22 Lower and Middle Miocene 22 Upper Miocene and Lower Pleistocene 23 Upper Pliocene and Lower Pleistocene 24 Upper Pleistocene and Recent 26 Specialization 27 Differentiation Agencies 29 Character Dispersal 30 (7)
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