The Snail. 



71 



HERM 

 GL. 



RET.MUS 



CEN.VS 



Fig. 32.— Reproductive organs of Snail. (After Howes.) 



AL.GL, albumen gland ; her.d, hermaphrodite duct ; herm.gl, hermaphrodite gland : 

 sp, spermatheca ; ov.u, oviduct ; PR, prostate ; fla, flagellum appended to male 

 duct; GEN.vs, genital vestibule; ret.mljs, retractor muscle. 



