THE BIOLOGY OF AN ANIMAL. 



ps 



1. 



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v. 



FIG. 24. Dorsal view of the anterior part of the body of Lumbricus, as it appears 

 when laid open along the dorsal aspect, ao, aortic arch ; c, crop ; c.y, cerebral 

 pranglia ; c.fj 7, calciferous glands ; c?, dissepiment ; d.i', dorsal vessel ; 0, gizzard ; 

 ce, ossopnagus ; p/i, pharynx ; ps, prostomium , s.i, stomach-intestine, showing 

 the lateral pouches; s.r, seminal receptacles; s.r. 1 , s.v. 2 , s.r. 3 , the three pairs of 

 lateral seminal vesicles. 



