CONTRIBUTIONS TO THE ANATOMY OF EARTHWORMS. 479 
Fic. 26.—Spermatheca of A. Rose in situ. a. Spermathecal pouch. 
6. Diverticula. c. Their long muscular duct. x. Nerve-cord. 
Fie. 27.—Transverse section through spermatheca of sexually immature 
A. georgianus. 6. Pouch. a. Diverticulum. 0/. Blood-vessels. 
Fie. 28.—Diverticulum of spermatheca of the same species more mature. 
Fig. 29.—Diverticulum of spermatheca of A. Rose. a. Colloid masses 
formed between cells 4, d, containing spermatozoa. 
Fic. 30.—Constituent cells of diverticulum of the same species more highly 
magnified. I, in longitudinal; II, in transverse section. Lettering as in 
last figure. 
Fic. 31.—Septal organs (a) of A. georgianus. 
Fie. 32.—One of the septal organs more highly magnified. s. Septum. 
x. Septal organ. 4/7. Blood-vessel. 
Fic. 33.—Transverse section through gizzard of A. georgianus. 
Fig. 34.—Section of muscular portion of spermathecal diverticula to show 
ciliated epithelium. 
Fic. 35.—Wall of median unpaired sperm-sac of A. georgianus. 
