PLATE XXXII. 



Class PIS CE S continued. 

 THE SKATE continued. 



FIG. 1. VENOUS CIRCULATION: HEART AND AFFERENT BRANCHIAL VESSELS: 

 VENTRAL ASPECT, x . 



c. s. cardinal sinus: h. hepatic sinus: s. c. sinus of Cuvier: s. v. sinus 

 venosus : a. c. anterior cardinal vein: i.j. inferior jugular 

 vein : /. femoral vein : e. epigastric vein : ab. veins from the 

 abdominal wall : b. brachial vein : i. h. ilio-hsemorrhoidal 

 vein : c. v. caudal vein : r. p. renal-portal vein : p. branches 

 of the renal-portal vein from the pelvic and lumbar regions : 

 k. kidney: r. renal veins : c. v. 1 , c. v. 2 posterior cardinal vein: 

 s. s. spermatic sinus : h. v. hepatic veins. 



a. auricle : v. ventricle : <?. conus arteriosus : ao. ventral aorta : 

 i. 1 , i. 2 posterior and anterior innominate arteries giving off 

 a.^-a. 6 the afferent branchial vessels: t. thyroid gland. 



FIG. 2. SINUS OF CUVIER AND SINUS VENOSUS LAID OPEN, x about J. 



7t. heart : s. v. sinus venosus : s. c. sinus of Cuvier : 7t. hepatic sinus : 

 a. c. anterior cardinal vein : i. j. inferior jugular vein : b. 

 brachial vein : c. v. posterior cardinal vein : c. s. cardinal 

 sinus : v. vertebral column. 



FIG. 3. THE HEART : VENTRAL VIEW WITH PART OF THE AURICLE, VENTRICLE 

 AND CONUS ARTERIOSUS REMOVED, x 1. 



a. parts of the auricle : v. ventricle (The arrow passes through the 

 auriculo -ventricular opening) : va. valves : ao. ventral aorta. 



FIG. 4. RELATION OF THE RIGHT SINUS OF CUVIER TO THE SHOULDER GIRDLE. 



x 1. 







s. c. sinus of Cuvier : br. brachial vein : .<?. c. f. scapulo-coracoid 

 foramen : c.f. coracoid foramen. 



FIG. 5. JUNCTION OF THE LEFT SINUS OF CUVIER AND THE HEPATIC SINUS, x 1. 



