1903. ] NEW SPECIES OF EARTHWORMS. 211 
The sete are strictly paired and the ventral pair of segment xvii. 
appear to be missing. The clitellum occupies segments xiv.—xvil. 
The median orifices of the spermatheca and of the spermiducal 
glands are very obvious, and frequently lie wpon projecting papille. 
The spermathecal pore opens far back upon the xiiith segment. 
The male pore opens far back upon the xviith segment, or even 
intersegmentally (xvii./xviii.). The penial setze can often be seen 
to protrude from it. Among the external characters, however, 
there is one which distinguishes the present species from its allies, 
and that is the total absence of the penial process of the body-wall. 
There was not the least trace of this organ observable in any of 
the individuals. It is true that this penis is not always to be 
seen in Stuhlmannia variabilis; but I do not think that it would 
be likely to be absent from thirty individuals selected at random ; 
and this absence is therefore one of the reasons which lead me to 
create a new species. 
Text-fig. 35. 
Dissection of Stuhlmannia michaelseni. 
xi, xii, segments eleven and twelve ; L.V., intestino-tegumentary trunks ; o.d., ovidueal 
apparatus; Sp., spermathecal sac; Sp.gl., spermidueal glands. 
The accompanying drawing (text-fig. 35) illustrates a general 
