REPTILES OF THE PACIFIC COAST. 23 



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 



attaches the plastron to the carapace. 

 Canthus rostral.is. 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 geneials. 

 Cloaca. A common chamber at the posterior ends of 



the alimentary and urogenital canals. 

 Collar. Gular fold, especially of Teiidcv. 

 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; 



of lizards, plates on the thigh. 

 Frenal See loreal. 

 Frontal The large plate or plates on top of the head 



between the supraoculars. Sometimes applied to 



the prefrontals. 

 Frontoparietal. Plates on top of the head between the 



parietals and the frontal. 

 Gastrosteges . Large plates along the lower surface of 



the body in most snakes. 

 Gastrostiga. See gastrosteges. 

 Geneials. Large scales behind the mental of many 



snakes, often in two pairs anterior and posterior. 

 Gular fold. Transverse fold of skin of throat. 

 Gular plates. The tirst pair of plastral plates. 



