296 W. BLAXLAND BENHAM. 
eight in Somite rv, forty-four in Somite 111, and thirty in 
Somite 11. 
The chetz are simple and sigmoid, without markings, and 
each is ‘036 mm. in length. 
The prostomium is completely dovetailed (fig. 15) into 
Somite 1. I can find no dorsal pores. 
The pores of the two pairs of spermathece are fairly large, 
and provided with white lips. Each pair lies in a median ventral 
depression, which is situated on the anterior margin of Somite 
viir and of Somite 1x; each pore being in line with the 
ventralmost couple of chetz (Pl. XVI, fig. 16, spth.). 
The spermiducal pores are not to be seen externally, but 
by means of sections I find them situated in Somite xviit, in 
front of the ventralmost couple of cheete. 
There is an oval depression on the ventral surface of Somites 
XVII, XviiI, and xrx, bounded laterally by a distinct ridge. 
Within this depression, on each of the Somites xvir and xrx, 
is a pair of small transverse slit-like pores—those of the pro- 
states—which lie in a line with the other genital pores (fig. 
16, prst.). 
The cheetz of these two segments appear to be absent, but 
in reality they are especially long, and are retracted into ~ 
the body-cavity—in fact, have become modified for copulatory 
purposes. 
The oviducal pores have the usual position on Segment xrv, 
though they are not visible externally. 
The nephridiopores (ne. 0.) are very distinct, even on the 
clitellum ; they appear as light spots, which are larger than 
those around the couples of chetz. These pores alternate in 
position (fig. 16), as in Neodrilus, &c.; this alternation 
being nearly but not quite regular, and sometimes not sym- 
metrical. In the following table the position of these pores 
in regard to the chetiferous spots is shown. The first spot is 
the ventralmost, so that the fourth spot is latero-ventral 
(fig. 174), the tenth is latero-dorsal—in fact, lies on the 
dorsal surface, and is the fourth spot from the mid-dorsal line 
(is 770). 
