GLOSSARY, 109 
Post-frontal (L. fosz, after)—A bone in some Verte- 
brata which lies behind the orbit and dorsal 
to the ali-sphenoid. 
Post-glenoid process.—A process of the temporal 
bone, situated immediately behind the 
elenoid fossa. 
Post-orbital process.—A process on the dorso-lateral 
border of the frontals in .some Vertebrata 
for the attachment of muscles. 
Post-sphenoid (L. /osz, after)—An independent ossi- 
fication of the posterior portion of the body 
of the sphenoid bone, seen in the fcetal 
skull. 
Pre-axial (L. pre, before)—A term applied to that 
surface of a limb, which is anterior, when 
the limb is at right angles to the vertebral 
column. 
Pre-coracoid (L. gv, before)—A bone of the pec- 
toral arch in some Vertebrata. 
Pre-frontal (L. fre, before)-—A bone of the skull in 
certain Vertebrata. 
Pre-maxilla (L. pre, before)— A bone formed in 
most skulls in which the upper incisor teeth 
are implanted. It is present in the human 
foetus, but fuses normally with the maxilla 
before birth. 
Pre-operculum (L. fre, before)—A bone in Teleos- 
tean fishes, situated in front of the operculum. 
Pre-sphenoid (L. gre, before)— A bone of the skull 
in some Vertebrata in front of the sphenoid 
