62 NORTH AMERICAN BATRACmA AND REPTILIA. 



Labials — Plates that border the mouth, except the rostral. 



Loral — A plate between nostril and eye, whose longest dimen- 

 sion is longitudinal. 



Mandible — The lower jaw. 



Marginal plates — Those around the margin of the carapace. 



Maxillary bones — Those at side of upper jaw, and separated in 

 front by premaxillaries. 



Metacarpals — Long bones in hand separating the carpals from 

 the phalanges. 



Metatarsals — Bones in foot separating tarsals from phalanges. 

 Nares — Openings of nose, external and internal. 

 Nasal — Pertaining to the nose. 

 Nasal plates — Those about the external nares. 

 Neural spine — The median dorsal spine of the vertebrae. 

 Nuchal — Pertaining to nape of neck. 

 Occipital plates — Those behind the vertical. 

 Ocellated — With eye-like spots, usually round with a lighter 

 border. 



Opisthocoelian — Said of the vertebrae when concave on the pos- 

 terior end only. 



Palatine teeth — Those on the palate bone; generally on anterior 



part of mouth. 

 Palmate — Webbed. 



Papillose — Covered with papillae or small fleshy projections. 

 Parotoid — A projecting gland behind jaw on side of neck. 

 Phalanges — The bones which form the fingers and toes. 

 Pectoral arch — The bones that support the fore limbs, as the 



clavicle, coracoid and scapula. 



Pedicellate — With a stem, stalk, or foot. 



Penultimate — Next to the last. 



Plantar tubercles — Tubercles on the soles of the feet. 



Plastron — The abdominal shield of turtles. 



Pleur apophyses — The true ribs or their homologues. 



PlicoB of tongue — Folds or grooves on the surface. 



Plicate — Transversely folded or wrinkled. 



Poller — Thumb. 



Postf rental plate — One in front of vertical. 



