Julia B. Platt 
’95. WOLFF, G., Entwicklungs-physiologische Studien. 1. Die Regeneration der 
Urodelenlinse. Archiv für Entwieklungsmechanik. Bd. I. 
’92. ZIEGLER, H. E., Uber die embryonale Anlage des Blutes bei den Wirbel- 
thieren. 
Verhandlungen der Deutschen Zoologischen Gesellschaft. 
Explanation of Abbreviations. 
ae. cartilage or procartilage of auditory 
capsule, 
al. alimentary canal, 
aop antorbital process, 
ar.1—4 first to fourth neural arches, 
au. auditory vesicle, 
aud. auditory capsule, 
av. mandibular artery, 
bep. basicranial plate, 
br. brain, 
br.plx. brachial plexus, 
b’—b’. space enlarged in fig. 10’, 
6.1— first and second basibranchial 
cartilages, 
cb.1—2 first and second cerato-branchial 
cartilages, 
ch. chorda dorsalis, 
che. m. cerato-hyoideus externus, 
cht. m. cerato-hyoideus internus, 
chy. cerato-hyal cartilage, 
cl45 hyomandibular and following 
branchial clefts, 
con.'—% first to third m. constrictores 
arcuum, 
dig. m. digastricus, 
ect. ectoderm, 
end. endoderm, 
epb.13 first to third epibranchial car- 
tilages, 
fb. margin of the mesectoderm over 
which the fore-brain passes, 
fo. fenestra ovalis, 
F.'* visceral folds, 
J.ıVII foramen for ramus hyomandi- 
bularis facialis, 
f2VIT foramen for ramus palatinus, 
gh. m. genio-hyoideus, 
gl. glossopharyngeal arch, 
gic. cartilage of glossopharyngeal arch, 
gim. muscle of glossopharyngeal arch, 
glp. peerage of glossopharyngeal 
arch, 
G.n.vg. vagus ganglion (SEWERTZOFF), 
g'—g’. space enlarged in fig. 1 g’, 
hh. hypohyal cartilage, 
hmp. hyomandibular pocket, 
hp. procartilage of hyoid arch, 
ht. heart, 
hy. hyoid arch, 
hybrel. hyobranchial cleft, 
hyc. cartilage of hyoid arch, 
hym. muscle of hyoid arch, 
hymes. mesothelium of hyoid arch, 
hyp. hypophysis, 
inf. infundibulum, 
v’—v'. space enlarged in fig. 12’, 
m. mouth, 
me. mandibular cartilage, 
md. mandibular arch, 
mdm. muscle of mandibular arch, 
mect. mesectoderm, 
mes. mesothelium, 
Mkp. procartilage of MecKEL’s bar, 
mp. procartilage of mandibular arch, 
myh. m. mylo-hyoideus, 
my’. first my otome (2"¢ postotic segment), 
m.1— first to fourth myotomes (SE- 
WERTZOFF), 
n. nasal epithelium, 
nal. first neural arch, 
occ. occipital cartilage, 
op. oral pocket, 
oph. margin of mesectoderm over which 
the ramus ophthalmicus profundus 
trigemini lies, 
opl. operculum auris, 
ops. optic stalk, 
pe. pericardium, 
p.oce, praeoccipital arch, 
prn. pronephric tubules, 
pr? first and second pronephrie seg- 
ments, 
prijfe. enlargements of coelom con- 
nected with the two pronephrie seg- 
ments, 
Q. quadrate cartilage, 
Qa. ascending process of the quadrate, 
s. point where the trabecular cartilage 
unites with the auditory, 
spb. suprapericardial body, 
spn.” first and second spinal nerves 
(hypoglossus), 
spn® third spinal nerve (first brachial), 
thy. thyroid outgrowth, 
ir. trabeculae, 
v. blood vessel, 
va.l,2 first and second vagus arches, 
vm. ventral longitudinal muscle, 
