MR. W. KE. PARKER ON THE SKULL IN THE MAMMALIA. 
ms.pg. Mesopterygoid, p.t.  Post-temporal. 
mt.c. Mastoid cells. ptr. Posterior tympanic recess. 
m.ty. Membrana tympani. pty. Pretympanic process of malleus. 
ma. Maxillary. _ pe. Premaxillary. 
n Nasal. py. Pituitary region. 
nC. Notochord. rec. Recurrent cartilage. 
nf. Nasal floor. rub. Recessus vestibuli. 
up. Nasal passage. s.a.c. and s.t.c, Supra-auditory cartilage. 
u.p.c. Nasal palatine passage or canal. — s.ag.  Supra-angulare. 
nth. Nasal turbinal. sc. and Ls. Sinus canal. 
nv.  Narial valve. sci. Short crus of incus. 
ob, Os butllee. su. Septum nasi. 
oc.c. Occipital condyle. | S.0. Supraoccipital. 
op.  Opisthotie. sob. Supraorbital. 
0.8, Orbitosphenoid. | sp. Splenial. 
p. Parietal. | sq. Squamosal. 
pa. Palatine. _ sg.c.  Squamosal cells. 
p.ag. Posterior angular process. «st, Stapes. 
p.cl. Posterior clinoid. LSet Supratemporal. 
p.e. Perpendicular ethmoid. | sta.  Stapedial artery. 
pg.  Pterygoid. _ sth. Stylohyal. 
pg.c. Pterygoid cartilage. _ stm. Stapedius muscle. 
pg. Postglenoid process. _ tals. Tympanic wing of alisphenoid. 
pgr. Processus gracilis. i.b.s. 'l'ympanic wing of basisphenoid. 
phe.  Pharynx. | tg. Tongue. 
p.m. Palatine plate of maxillary. | the. Thyroid cartilage. 
pn. Posterior nares. | thy. Thyrohyal. 
pu. Pneumatic foramen. ir. Trabecula. 
p.ob. Postorbital. tt. Tentorium. 
p.oc. Paroccipital. t.tm. Tensor tympani. 
p-p.f- Posterior palatine foramen. tty. Teomen tympani. 
p.px. Palatine process of premaxillary. | wtb. Upper turbinal. 
pr.o. Prootie. utr. Upper tympanic recess. 
ps. Presphenoid. _v.,v., Vv’, Vomerine bones. 
p.s.c. Posterior semicircular canal. vb. Vestibule. 
