Contents 
Foreword 
John C. Eberhart iii 
Prefatory Comments 
Theodore H. Reed v 
Bertram S. Brown vi 
Editors’ Comment vii 
Contributors ix 
Neurology 
Why Brain Research on Lizards? 
Paul D, MacLean 1 
Forebrain and Midbrain Organization in Lizards and Its Phylo- 
genetic Significance 
R. Glen Northcutt 11 
Forebrain Connections in Lizards and the Evolution of Sensory 
Systems 
Ann B. Butler 65 
Analysis of The Visual System in a Lizard, Tupinambis nigro- 
punctatus 
Judith A.F. Cruce and William L.R. Cruce 79 
Somatosensory Pathways in Lizards: The identification of the 
Medial Lemniscus and Related Structures 
Sven O.E. Ebbesson 91 
The Organization of Descending Pathways in the Tegu Lizard 
and Some Comments on the Evolution of Motor Systems 
William L.R. Cruce 105 
A Working Concept of the Organization of the Anterior Dorsal 
Ventricular Ridge 
Philip S. Ulinski 121 
Discussion 133 
Laboratory Studies of Behavior 
Behavioral Responses to the Electrical Stimulation of the Brain 
in the Green Iguana 
Hansjurgen Distel 135 
Integration of Internal and External Stimuli in the Regulation of 
Lizard Reproduction 
David Crews 149 
xi 
