274 CALIFORNIA ACADEMY OF SCIENCES. 



short. The muscular part of the prostate is very short. 

 The sperm ducts not enlarged before reaching the male 

 pore. Large lobed sperm-sacs in ix and xii. No con- 

 necting vessel in somite ix. The septal gland in v largest. 

 Sacculated intestine begins in xii. 



Ocnerodrihis giiatemalce , n. sp. 



Clitellum very short, xiv to xviii inclusive. No ventral 

 zone. Spermatheca very short, sac or club-like, vv^ith a 

 distinct lower muscular duct, with only a trace of diver- 

 ticular swelling. The septal gland in somite v twice as 

 large as the one in vi. Sacculated intestine begins in 

 somite xii. No connecting vessel in somite ix. 



Ocnerodrilus sonorce, n. sp. 



Clitellum very short in xiv to xvii. In the inner couple 

 of setce in somite xvii, the outer seta is missing. Sperma- 

 theca small, bag-like, no diverticula. Septal glands in 

 V of almost the same same size as the one in vi, slightly 

 larger. The lower part of the sperm duct is not enlarged. 

 One pair of prostates in xvii; the lower or muscular part 

 of each duct is not narrower than the glandular part. 

 The large lobed sperm-sac in xii is the largest. Saccu- 

 lated intestine begins in xii. 



Ociierodrihis Hendr/ei, n. sp. 



Clitellum from xiv to xix, encroaching on xiii and xviii. 

 The inner couple of setas in xvii is wanting. Sperma- 

 theca small, cylindrical, no diverticula, about as long as the 

 width of the diverticulum. Prostate short in two somites. 

 Sperm-sacs in ix,xi, xii. The one in ix not much lobed. The 

 one in xi very large, not lobed, and the one in xii much 

 lobed. Sperm ducts without sweUing. One pair of con- 

 necting vessels in somite ix. The septal gland in v much 

 larger than the one in vi. The glands in vii and viii are 

 very small. Sacculated intestine begins in xii. 



