1901.] AND ABRANGEMENT OF EARTHWORMS. 201 



bring it nearei' to Megascolides. There are two pairs of sperm - 

 sacs which occupy what Dr. Michaelsen regards as the primitive 

 position, i. e., segments ix. and xii. They are roughly triangular- 

 shaped sacs, and are lobulate ; the two pairs are very different in 

 size, those of segment xii. being rather the larger. There are, 

 however, but a single pair of funnels, which are larger and lie as 

 usual in the xith segment. 



Text-fig. 56. 



T- 



Typhoeus incommodtis. Head-end, X 4. 

 S , male pore ; P, papillae. 



The coiled spermiducal glands present no remarkable features. 

 The glandular part is a great deal thicker than the muscular duct. 

 The latter is very short, much shorter than in the last species, and 

 is only bent once on the right side and into a "W on the left. 



