INTRODUCTION 



GLOSSARY 



Abdominal. Pertaining to the lower surface of the body. 



Abdominal plates. Gastrosteges of snakes $ the fourth pair 

 of plastral plates of turtles. 



Alveolar surface. Masticatory surfaces just within the cut- 

 ting edges of the jaws of turtles.. 



Anal $late. The large scale just in front of the anus in 

 most snakes, sometimes divided $ one of the last pair of 

 plastral plates. 



Anteorbital. See preocular. 



Anterior. Toward the head. 



Antocular. See preocular. 



Anus. The external opening of the cloaca. 



Axilla. The armpit. 



Axillary. Plates on the anterior surface of the bridge of 

 turtles. 



Azygous. Single ; not one of a pair. 



Brachials. Large scales on the arm. 



Bridge. That portion of the shell of a turtle which at- 

 taches the plastron to the carapace. 



Canthus rostralis. A slight continuation of the super- 

 ciliary ridge separating the top from the side of the snout. 



Carapace. The upper portion of the shell of turtles. 



Carinate. Keeled. 



Chin shields. See genials. 



Cloaca. A common chamber at the posterior ends of the 

 alimentary and urogenital canals. 



Collar. Gular fold, especially of Teiidae. 



Costals. The large plates on the sides of the carapace. 



Dermal. Pertaining to the skin. 



Femoral 'pores. Glands along the lower surface of the 

 thigh. 



Femorals. Of turtles, the fifth pair of plastral plates 5 of 

 lizards, plates on the thigh. 



Frenal. See loreal. 



