144 GLOSSARY. 



MUZZLE, the mouth and adjacent parts. 



NARIAL, pertaining to the nostrils. 



NASAL, the bone whose hinder end rests upon the nasal process of 



the frontal. 

 NAVICULAR, the ankle bone lying between the astragalus, the 



cuboid, and the cuneiforms. 

 NECK OF A RIB, the portion of the rib between the capitulum 



and the tubercle. 

 NEURAL ARCH, the arch formed by the processes which rise on 



each side from the dorsal surface of the centrum of a 



vertebra. 

 NEURAL SPINE, the process that projects upwards from the 



crown of the neural arch. 

 OCCIPITAL, the bone at the lower and hinder part of the 



cranium. 



OCCIPUT, the hinder portion of the head. 

 ODONTOID, the centrum of the atlas. 

 OLECRANON, the process at the the upper end of the ulna to 



which the extensor muscles of the fore arm are attached. 

 OMOSTERNUM, the cartilaginous body at the sternal end of the 



clavicle. 



OPISTHOCGELUS, concave behind and convex in front. 

 OPISTHOTIC, the lower bone or cartilage encasing the organ of 



hearing. 

 ORBITO-SPHENOID, one of the lesser wings of the sphenoid 



bone of the skull. 

 OSSICLES, small bones. 



OVIPAROUS, bringing forth the young in the egg. 

 OVOVIVIPAROUS, retaining the eggs in the body until the young 



are hatched. 



PALATAL, pertaining to the palate. 

 PALATINE, the bone attached to the fore part of the pterygoid and 



forming the outer wall of the nasal canal. 

 PALMATED, flattened out like the palm of the hand. 

 PAPILLA, a small, soft prominence generally adapted for delicate 



sensation. 



PARAGON E, the outer primary cusp of an upper tooth. 

 PARAGON ID, the outer primary cusp of a lower tooth. 

 PARAPOPHYSIS, the lower transverse process of a vertebra. 

 PARIETALS, the bones placed next above the alisphenoids. 

 PAROCCIPITAL, the prominent process lor muscular attachment 



placed externally to the occipital condyle. 



PATAGIUM, the wing membrane of the bats arid flying squirrels. 

 PATELLA, the knee-cap. 

 PECTORAL GIRDLE, the shoulder girdle. 

 PEDICLES, the processes on the frontal bones from which the 



antlers are developed and shed ; the lower portions of the 



sides of the neural arch. 

 PELVIC GIRDLE, the hip girdle, formed of the two innominate 



bones or their components. 

 PELVIS, the bony ring formed by the innominate bones or their 



components and the sacrum. 

 PERIOTIC, the bone in which is the internal ear. 



