38 
MONICA TAYLOR. 
long structure it is in the adult. The heart shows the 
ordinary Teleostean features (compare PI. 4, fig. 20). An 
Text-fig. 3. 
A. Diagram of the principal veins of a larva of Stage 29 (ventral 
view). B. Diagram of the venous system of adult Symbranchus 
(ventral view). The liver has been pinned out to the right. 
a. c. V. Anterior cardinal vein. c. v. Caudal vein. i.j. v. Inferior 
jugular vein. i. r. v. Interrenal vein. Ic. Kidney. 1. Liver. 
1. p. c. Left posterior cardinal. r. d. c. Right ductus Cnvieri. 
r. p. c. Right posterior cardinal, s. i. v. Snbintestinal vein — 
vitelline vein — hepatic vein. Urinary bladder. y.s.c. 
Yolk-sac circulation. 
artery is given off from the dorsal aorta to supply the 
urinary bladder. Intersegmental arteries are also given off to 
