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DEVELOPMENT OF THE SKULL IN THE CROCODILIA. 
PLATE LXXI. 
section, X 5 diam. 
. The same, 4th section, x 5 diam. 
The same, 5th section, x 5 diam. 
The same, 6th section, K 5 diam. 
. The same, 7th section, x 5 diam. 
. The same, 8th section, x 5 diam. 
. The same, 9th section, x 5 diam. 
EXPLANATION OF ABBREVIATIONS. 
The Roman numerals refer to nerves or their foramina. 
ag. 
al.s. 
Angulare. 
Alisphenoid. 
al.f. Alisphenoidal fenestra. 
a.p. Ascending process. 
ar. 
Articulare. 
ar.c. Articular cartilage. 
ar.p.c. Articular pneumatic cavity. 
a.s.c. Anterior semicircular canal. 
au. 
a. ty. 
b.mn. 
6.0. 
b.s. 
b.t. 
. Fore brain. 
. Hemispheres. 
. Olfactory lobes. 
. Mid brain. 
. Hind brain. 
. Ceratobranchial. 
. Cochlea. 
. Ceratohyal. 
. Cleft. 
. Coronoid. 
.c. Coronoid cartilage. 
. Eye. 
. Epihyal. 
Auditory capsule. 
Annulus tympanicus. 
Basimandibular. 
Basioccipital. 
Basisphenoid. 
Basitemporal. 
é.n. External nostril. 
e.0. Exoccipital. 
ep. Epiotie. 
e.st. Extrastapedial. 
f. Frontal. 
fo. Fontanelle. 
jf-r. Fenestra rotunda. 
fs.0. Fenestra ovalis. 
h.br. Vyobranchial. 
h.s.c. Horizontal semicircular canal. 
z.c. Internal carotid. 
i.hy. Interhyal. 
zn. Inner nares. 
inf. Infundibulum. 
a.st. Infrastapedial. 
7.tb. Inferior turbinal. 
z.tr. Intertrabecula. 
j. Jugal. 
1. Lacrymal. 
li. Lacrymal involution. 
l.ew. Lateral Eustachian tube. 
1.o.al. Lateral orbito-alisphenoidal 
fenestra, 
m. Mouth. 
m.eu. Middle Eustachian tube. 
mk. Meckel’s cartilage. 
mn.f. Mandibular fenestra. 
309 
- Same head of Crocodilus palustris as in figs. 12 & 13 of Plate LXX., 3rd 
