PLATE XLII. 



Class PISCE S continued. 

 THE COD continued. 



FIG. 1. KIDNEY, SWIMBLADDER, AND EIGHT TESTIS : SIDE VIEW, x f . 



a., p. anterior and posterior cardinal veins in relation to k. the 

 kidney : d. Cuvierian duct : b. swimbladder laid open : r. rete 

 mirabile : c. posterior portion of the cephalic circle : a. dorsal 

 aorta : s. spermatic vessel : t. testis : u. ureter : U. bladder. 

 (Bristles are passed into the openings of the rectum, testes, 

 and bladder.) 



FIG. 2. KIDNEYS AND THEIR BLOOD-VESSELS : VENTRAL VIEW, x f . 



Jc., h kidney : a. anterior cardinal vein : p. posterior cardinal vein : 

 d. Cuvierian duct : au. auricle : v. ventricle : ao. aorta : 

 c. caudal vein. 



FIG. 3. TESTES, UNITED POSTERIORLY, x -i. 

 FIG. 4. OVARIES, UNITED POSTERIORLY, x -' . 



