240 TRANSACTIONS OF THE [JUNE 4, 
direct communication between the funnel and the nephridial 
oland. 
In Clepsine the funnel lies in the ventral sinus. Its position 
is always fixed by the ganglion, on both sides of which the 
ciliated organs lie. 
Bourne stated that the funnel consists of only two ciliated 
cells. I found that the funnel of Clepsine resembled very closely 
the funnel of Nephelis, which I described in my former paper. 
The ciliated cells are arranged around an aperture which 
leads into the vesicular enlargement of the funnel. I counted 
from 3 to 5 cells. 
This funnel vesicle is filled with débris of the chloragogenous 
cells. Now we know that in Nephelis the funnel lies in another 
place, and is equally surrounded by chloragogenous cells. I 
therefore find it very remarkable that in Clepsine those cells 
enter the ventral stnus and surround the funnel. 
Moreover, I could follow out in the series the nephridial gland 
passing through the connective tissue, through the longitudinal 
muscle bands entering with its terminal part the ventral sinus, 
and connecting at last with the funnel vesicle. To recapitulate : 
1. In Clepsine the funnel resembles closely the funnel of Ne- 
phelis. 
2. The connection between the nephridial gland and the fun- 
nel takes place within the ventral sinus. 
3. The funnel is surrounded by chloragogenous cells in the 
interior of the ventral sinus. 
In Nephelis I was less fortunate than in Clepsine. I could 
see in two cases the nephridial gland in slight connection with 
the bottom of the funnel, but in most of the cases the funnel 
was in no direct connection with the gland. However, the ob- 
servations I made seem to indicate an indirect communication 
through a space in the connective tissue. 
1. The terminal part of the nephridial gland always goes 
close to the wall of the ampulla in which the funnel lies. 
2. Opposite the terminal portion of the gland there is always 
an opening in the wall of the ampulla. 
3. This opening always corresponds to the bottom part of the 
funnel. 
As to the funnels in Aulastoma I have little to say, my series 
not being as satisfactory as in the preceding species. 
1. The funnels lie in sinuous vesicles, dorsal from the testis, 
and at the side of the intestine. 
2. The funnels are closely surrounded by an enormous quan- 
tity of chloragogenous cells that assume in Aulastoma a some- 
what different character than in Nephelis and Clepsine. They 
