72 COMPARATIVE MORPHOLOGY OF VERTEBRATES. 
TABLE OF THE PRINCIPAL CRANIAL BONES. 
¢ Chondrocranium 
Cranium 
Membrane bones 
( Maxillary arch 
Mandibular arch J 
Visceral 
skeleton 
Hyoid arch 
Gill arches 
Notochord 
parachordals 
Trabecule 
Ethmoid 
plate 
Basi-, ex-, and supra-. 
occipitals 
Basi- and ali-, pre- and 
orbitosphenoids 
Mes- and ectethmoids 
{ Pro-, epi-, opisth-, pter- 
Otic es sphenatics (petro- 
Sense cap- { Optic 
Nasal 
sules 
Lateral line 
Membrane bones 
Pterygoquadrate 
cartilage 
Membrane 
Meckel’s cartilage 
Membrane 
Gilt arches 
sal) 
(Sclerotics) 
f Lateral ethmoid, tur- 
\ binals 
Parietals, frontals, na- 
sals, pre- and post- 
frontals, supra- and 
postorbitals 
Lacrimals, infraorbitals 
Premaxillary, mazxilla- 
ry, zygomatic, quad- 
tatojugal, squamosal 
Pterygoid (ect-, ent-, 
epi-, mesopterygoids), 
quadrate (incus) 
Palatines, vomers 
Articulare (malleus), 
mento-Meckelian 
ue 
Dentary, splenial, coro- 
noid, angulare (tym- 
panic), suprangulare, 
goniale 
Hyomandibulare (sta- 
pes) symplectic, inter- 
hyal, epi-, cerato-, 
hypo-, and _basihyal 
(corpus, copula) (col- 
umella) (lesser cornua) 
Pharyngo-, epi-, cerato-, 
hypo-, basi-, hypohyal, 
| (copula, greater cornua) 
_——" 
