276 CALIFORNIA ACADEMY OF SCIENCES. 



largement near the male pore, occupying about one and 

 and one-half somite; its lumen about one-fourth or one- 

 third as wide as the enlargement. Prostate with muscular 

 duct. Septal gland in somite v not larger than the one in 

 vi. Sperm-sac in somite ix very large, and longer than 

 those in x, xi and xii. No connecting vessel in ix. 

 Sacculated intestine begins in somite xii. 



Ocnerodriltis agricola, n. sp. 



Clitellum in xiv to xvii. A large ventral zone in somite 

 xvii surrounding the male papilla. The inner pair of 

 set£e in somite xvii wanting. Spermatheca^, one pair in 

 ix, sack-like, globular, very large, with no diverticula. 

 Prostate long. Sperm ducts enlarged before reaching 

 the male pore. Large lobed sperm-sacs in ix and xii. 

 No connecting vessel in ix. The septal gland in v is the 

 largest. Sacculated intestine begins in xii. 



Ocnerodrilus occidentalis, Eisen. 



Clitellum, xiii to xix. No zone in xvii. One seta is 

 wanting in the inner pair in somite xvii. No sperma- 

 thecee. Prostate very long. Sperm ducts not enlarged 

 before reaching the male pore. No connecting vessel 

 in ix. One pair of testes in x. No large lobed sperm- 

 sacs in ix, X and xii. One pair sperm-sacs in xi, with 

 muscular duct. The septal gland in v not longer than 

 the one in vi, and the one in viii not smaller than the 

 others. Sacculated intestine begins in xii. 



The affinities of Ocnerodrilus have alread}' been com- 

 mented upon by Beddard, and he has pointed out the re- 

 lationship of our worm with Pontodrilus, Photodrilus, 

 Microscolex and Gordiodrilus. The latter genus he 

 places in the same family as Ocnerodrilus, and retains 

 the name of Ocnerodrilida^. 



In this I cannot exactly agree. It is, however, entirely 



