475 



The genital system exhibits the most remarkable characters. The 

 clitellum extends over segments X, XI, XII, and part of segment XIV. 

 On the anterior wall of the 1 0th segment are situated the paired testes 



^pc.p. oo. atr. ood. 



Diagram of the genital system, seen from the ventral surface, t testis, spc sper- 

 matheca, spc.p spermathecal pore, spd spermduct, atr atrium, m.p median male pore, 

 ov ovary, ovd oviduct. 



(fig. 1 ^) ; in this segment open the two funnels of the spermducts 

 (fig. 1 spd). The spermducts are short, slightly convoluted tubes, 

 which for the greater part of their course have thick glandular walls 

 (in fig. 2, they are cut p.^ 2 



through three times, sjid) ; 

 they open , on either side of 

 the nerve cord (fig. 2 n.c), 

 into a median cavity, or 

 »atrium« (figs. 1 and 2 atr) . 

 This cavity, apparently for- 

 med by the invagination of 

 the epidermis, is of conside- 

 rable size, and opens ven- 

 trally by a large median pore 

 (figs. 1 and 2 m.p) . The two 

 ovaries (fig. 1 oy) are situated Diagram of a transverse section through the 



on the anterior wall of the median male pore, «i.w dorsal blood vessel, v.v 

 nth segment; the oviducts central blood vessel, n.c nerve cord, int inte- 

 stine, spd spermduct, atr »atrium«, m.p male 



sp.d. 



atr. 



m.j). 



pore. 



(fig. 1 ox>d) are short tubes 

 traversing the septum bet- 

 ween the 1 1th and 12th segments. Opening by a median ventral pore 

 (fig. 1 s-pc.p) on the 10th segment are two pear-shaped sacs, the sper- 

 mathecae (fig. 1 spc). 



It seems advisable to form a new genus for the reception of this 

 worm, characterized, for the present, by the possession of median male 



