198 W. BLAXLAND BENHAM. 
The male apparatus is represented in greater detail in 
fig. 18, as seen when “squeezed” out of the body, with 
exception of the funnel, which remained inside. 
The funnel, as in all the aquatic Oligochetes, is simple, and 
not folded as in earthworms. In the Tubificide it is a very 
large, flattened, and shallow structure, as is also the case in 
the Lumbriculide and Phreoryctide. In the Enchy- 
treide it has a characteristic form, being long, narrow, 
thick-walled, and projecting far into the cavity of its 
segment, 
In Heterocheta the funnel, though usually lying flat 
against the face of the septum, undergoes, with the contrac- 
tion and extension of the worm, a corresponding movement, in 
that the lips move to and from the septum, so that its other 
extreme position is represented in fig. 19. 
The duct does not leave the funnel in the centre of the 
latter, but slightly to its outer side. This asymmetrical con- 
dition is shown by Beddard in Clitellio arenarius; but in 
all other figures by Claparéde, Vejdovsky, &c., the duct is 
represented as leaving the funnel in its centre. Whether 
there is any differential character in this feature I do not 
know. I rather think that this is not the case, but that the 
drawings are to some extent diagrammatic, and make no 
pretence to represent the thing accurately. 
The sperm-duct is thin-walled and ciliated internally, as is 
always the case. 
The “atrium”? (fig. 18) is divisible into two regions here, 
as in Psammoryctes—a region coated with granular cells, 
which give to it a dark appearance (gl. atr.); and a thin- 
walled, narrower region (v. gl. atr.), which passes to the 
penis.! 
There are no ciliain the “ atrium,” using the word to include 
all that part of the apparatus after the entrance of the solid 
‘‘prostate.”” The terminal part of the atrium passes into 
‘To this dark granular region Vejdovsky, in his description of Psam- 
moryctes, gives the name “seminal vesicle,” whilst the long narrower 
region between it and the penis is termed by him the “ cement duct.”’ 
