338 
ab.p. 
ab.p.c. 
abv. 
aff.art. 
anf. 
an.f.m. 
ao. 
b.c. 
bv. 
b.w.m. 
CU. 
cd. 
con.tis. 
dm. 
€.0V.W. 
eff.art. 
f.o. 
g-Op. 
Gp: 
m.OUV.W. 
k. 
kv. 
Lon 
ON SOME POINTS IN THE ANATOMY OF POLYPTERUS. 
XIV. EXpLaNatTioN oF THE LETTERING OF THE FIGURES. 
Abdominal pore. 
Abdominal pore-canal. 
Abdominal vein. 
Afferent artery. 
Anal fin. 
Anal-fin muscle. 
Aorta. 
Blood-corpuscle. 
Blood-vessel. 
Body-wall muscle. 
Cardinal vein. 
Caudal vein. 
Connective-tissue, 
Dorsal muscle. 
External wall of ovary. 
Efferent artery. 
Fat-body. 
Genital aperture. 
Genital papilla. 
Median wall of ovary. 
Kidney. 
Kidney-vein. 
Lymphoid tissue. 
. Malpighian corpuscles. 
. Mesoarium. 
. Mesorchium. 
. Nucleus of ovum. 
. Ovum. 
. Attachment of ovum. 
. Opercular muscle. 
. Ovary. 
Oviduct. 
ovd.ep. 
p.ep. 
pl. 
pn. 
W.U.U. 
Epithelium of oviduct. 
Peritoneal epithelium. 
Pinnule. 
Pinna. 
*, Rectum, 
. Spermatozoa. 
. Spermatic artery. 
. Spermatic epithelium, 
. Spermatic vein, 
. Swim-bladder. 
Testis. 
. Testis-duct. 
. Epithelium of duct of testis. 
. Testis-duct sheath. 
. Testis-ridge. 
. Testis-ridge tubules. 
. Testis-tubules. 
. Ureter. 
. Epithelium of ureter. 
. Urinogenital aperture. 
. Urinogenital sinus, 
. Urinary sinus. 
. Sheath of ureter. 
. Uriniferous tubules. 
. Vas deferens. 
. Epithelium of vas deferens. 
. Ventral muscle. 
Point where oviduct ends in wall of 
ureter. 
Point where vas deferens ends in wall 
of ureter, 
