INFLUENCE OF 
LATERAL-LINE CANALS 
321 
@.com. 
qJ 
Fig. 1 Generalized figure of dorsum of an early amphibian skull, to show 
position of elements of cranium in relation to laternal-line canals. 
The outline 
is based on that of Eryops, but does not indicate that form. 
ABBREVIATIONS 
a. com., anterior commisure of lateral- 
line canals 
com., commisural communication be- 
tween infra- and supra-orbital canals 
fr., frontal bone 
inf., interfrontal 
inn., internasal 
info., infra-orbital lateral-line canal 
it., intertemporal 
J+ jugal 
jl., jugal lateral-line canal 
lar., lacrimal 
mx ., Maxilla 
n., nasal 
oc., occiput 
occ., occipital cross-commissure of 
lateral-line system 
or., orbit. 
par., parietal 
po., postorbital 
pf., prefrontal 
pof., postfrontal 
pmz., premaxilla 
pp., postparietal 
q., quadrate 
qj., quadratojugal 
spo., supraorbital canal 
sq., Squamosal 
spt., supratemporal 
t., temporal lateral-line canal 
tab., tabulare 
