220 



MANUAL OF ELEMENTARY ZOOLOGY 



p.v.s. <Z, 



Fig. 138. — An earthworm {£. hercuieus), dissected from above. 

 z.v.^. t Horns of the anterior vesicula seminalis ; cr., crop; d.b.v. t dorsal blood 



horns of the posterior *«»».»•«, ^u>umiu , P n. t \ 

 spermathecae ; sup,ph.g., suprapharyngeal ganglia. 



