GLOSSARY. 145 



PHALANGES, the bones of the digits either of the hand or foot. 

 PHARYNX, the commencement of the gullet. 

 PISIFORM, the outer bone of tfre wrist nearest to the ulna. 

 PLANTIGRADE, planting the whole sole of the foot on the 



ground. 



PLASTRON, the lower part of the shell of a chelonian. 

 POLLEX, the thumb or first digit of the hand, 

 PORIFEROUS, bearing pores. 



POST-FRONTAL, the separate hinder portion of the frontal. 

 POSTORBITAL, a process extending backwards from the frontal 



bone, marking the division between the orbit and the 



temporal fossa. 



POSTSCAPULA, the backwardly projecting plate of the scapula. 

 PREFRONTAL, the separate fore portion of the frontal lying 



between the frontal and the lachrymal. 

 PREMOLARS, the teeth placed between the canine and the 



molars. 



PRESCAPULA, the forwardly projecting plate of the scapula. 

 PREM AXILLA, the bone placed immediately in front of the 



maxilla. 

 PRENASAL, the bone at the outer end of the mesethmoid which 



strengthens the cartilaginous snout in the swine. 

 PRESPHENUID, the bone in the skull immediately in front of 



the basi-sphenoid. 

 PRESTERNUM, the fore part of the sternum to which the clavicle 



is" attached. 



PROCESS, a projection. 

 PROCCELOUS, concave in front. 



PRO-OSTEA, the two diverging horns of the presternum. 

 PRO-OTIC, the front bone or cartilage encasing the organ of hearing. 

 PROTOCONE, the central primary cusp of an upper tooth. 

 PROTOCONID, the central primary cusp of a lower tooth. 

 PROXIMAL, nearest to the body. 

 PTEROTIC, the bone or cartilage between the pro-otic and epiotic, 



being the lamelliform expansion of the upper edge of the 



periotic. 



PTERYGOID, the bone attached to the lower surface of the basi- 

 sphenoid and pre-sphenoid. 

 PUBIC, pertaining to the pubis. 

 PUBIS, the share-bone, the front bar of the lower component of 



the innominate bone in the pelvic arch. 

 QUADRATE, the squarish bone at the junction of the jaws in birds, 



reptiles and fishes. 



QUADRATO-JUGAL, the bone formed by the union of the quad- 

 rate with the jugal. 



RADIALE, the wrist bone joining on to the radius. 

 RADIUS, the long bone in the fore arm in line with the thumb. 

 RAM US, a term for either right or left half of the lower jaw. 

 RECTUM, the last of the large intestines. 

 ROSTRAL, pertaining to the beak. 

 ROSTRUM, the beak formed in the cetaceans by the premaxillae 



and maxillae surrounding the vonier and niesethrnoid 



cartilage. 



