288 
CLA YPOLE. 
REFERENCE LETTERS. 
ay.-a. abdominal segments 
an. 
anus. 
abortive ovum. 
antenna. ’ 
blood corpuscle. 
blastomeres. 
crenated membranes. 
central blastomeres. 
cephalic elongation. 
cavity of mid-gut. 
chromatin. 
collophore. 
central mass of protoplasm. 
deutocerebrum. 
eye. 
ectoderm. 
egg membrane. 
entoderm. 
follicle. 
fat globules. 
female pronucleus. 
germ cell. 
germinal epithelium. 
germinal vesicle. 
intercalary segment. 
intestine. 
knob. 
longitudinal muscle. 
labrum. 
membrane. 
muscles. 
mandibles. 
mesoderm. 
mesoblastic somite. 
mouth fold. 
m.gc. migrating germ cells. 
mp. mouth-parts. 
m.pr. male pronucleus. 
MX. Z 
: { maxillae. 
Mo. 
nN. nucleus. 
m.c. nutritive cells. 
ncl. nucleolus. 
ur. nervous system. 
0. ovum. 
o.d. oblique division. 
ov. ovary. 
p: preparatory membrane. 
Bax } polar bodies. 
pibo. 
pc. protocerebrum. 
pe.o. precephalic organ. 
pd.  proctodaeum. 
pz. protoplasmic island. 
p.m. protoplasmic network. 
To radial protoplasm. 
y.o. opening for reproductive organ. 
5. sperm cells. 
s.gc. stationary germ cells. 
sp.me. splanchnic mesoderm. 
st. stomodaeum. 
ee 
to. thoracic segments. 
Z3. 
Za. thoracic appendages. 
te. tritocerebrum. 
y: yolk. 
yc. yolk cells. 
ym. yolk mass. 
ym. yolk nucleus. 
v. vitelline membrane. 
