242 DIFFERENT FORMS OF CIRCULATING APPARATUS. 
Lesser circulation. 
Ventricle 
Auricle, 
Veins 
Greater circulation, 
Fig. 131.—D1aGRam oF THE CIRCULATION IN FISHES. 
(Zootocy § 305). In the lower tribes of animals we shall 
Lesser Circulation. 
Branchio-cardiac canals 
Arteries 
Greater circulation. 
Fig. 132.—Dtagnam or tHE CrncULATION IN CRUSTACEA. 
Se ye en ee 
