24 CALIFORNIA ACADEMY OF SCIENCES. 



Gulars. Scales on throat. 



Humerals. The second pair of plastral plates. 



Imbricate. Lapped, as shingles. 



Inferior. Lower. 



Infralabials. Plates on the lower lip. 



Inguinals. Plates on the posterior surface of the bridge 

 of turtles. 



Internasals. Scales on the top of the snout just behind 

 the rostral plate. 



Interparietal . A plate on top of the head (of lizards) 

 between the parietals and usually containing the 

 pineal spot. 



Juxtaposed. Placed side by side, not imbricate. 



Keel. A ridge along a scale like the keel on an over- 

 turned boat. 



Lafo'aLs. Plates on the lips; specially, on the upper lip. 



Laterals. Scales on the sides; the costals of turtles. 



Loral i, See loreal. 



Lorcal. In the space between the preoculars and nasals. 



Maculate. Marked. 



Marginals. The plates around the edge of the carapace. 



Mental. -^-Same as symphyseal, but usually of snakes. 



Mucronate. Provided with a point or spine. 



Nuchal plate. The unpaired marginal plate of turtles 

 on the median line at the front of the carapace. 



Occipitals. Plates behind the parietals. Sometimes ap- 

 plied to the parietals. 



Parietals. In most snakes, the largest and last plates 

 on top of the head; in lizards, plates at the side of 

 the interparietal and behind the frontoparietals. 



Pectoral plates. The third pair of plastral plates. 



Plastral. Pertaining to the plastron. 



Plastron. The lower portion of the shell of turtles. 



Postabdominal. Anal plate. 



