NEW SPECIES OF OCNERODRILUS. 267 



does not exceed two and one-half times the muscular 

 part, while in the present form the glandular part of the 

 prostate is about four times as long as the muscular part. 



The ovary and oviduct are, as elsewhere, situated in 

 somites xiii and xiv, and offer no peculiar characteristics. 



The inner couple of the setce in somite xvii is wanting. 

 The species is easily and best characterized by the large 

 globular spermatheca in somite ix, which is so large that 

 it obstructs the view of the oesophageal diverticulum. 



The body-wall of Ocnerodrihis agTicola is very thin, 

 much more so than in other species ; it is also quite trans- 

 parent and white. As to size, this species is thicker than 

 any other. Epecially the anterior part is thicker than the 

 corresponding part of O. Beddardi . 



Habitat. Guatemala City, in Guatemala, Central 

 America, in garden soil. This species was never found 

 in running water, but always in moderately dry places. 



Ocnerodrilus occidentalis, Eisen. Figs. 15, 16, 21, 

 22, 68, 69, 70, 82. 



Clitelliini occupies six to seven somites, from xiv to xix, 

 sometimes encroaching on somites xiii and xx. It is not 

 always present, even in sexually mature specimens. 



No sperniathecal pores or spermatheca . Spermidiical 

 or male papillce, one pair in somite xvii. The inner 

 couple of set£e in somite xvii present; ovipore in somite 

 xiv — one pair; septal glands in somites v, vi, vii and viii. 

 The glands respectively in somites v, vi and vii are of 

 about the same size, while the one in somite viii, which is 

 generally in other species much lower, is in this species 

 of about the same size as the anterior glands. The gland 

 in somite v is not longer than those in vi and vii, and all 

 the glands are less lobed than in other species. 



The testes and sperm-sacs are differently arranged in 



