i8 
THE NATURALISTS’ JOURNAL. 
much the appearance of the Turgid Worm (A. tuvgida , Eisen), 
but the hinder part is more angular in outline, owing to the 
disposition of the setae. The colour is ashy-grey, clayey, 
or fleshy-brown, with clay-coloured girdle. Owing to the 
greater transparency of the integument, the head appears 
rosy or flesh-coloured, while the anal extremity is quite 
yellow in fresh specimens, due to the presence of a golden 
liquid, which it emits when placed in spirits. The segments 
which contain the essential organs are paler than the rest, 
and from these also some specimens exude a coloured fluid. 
As the possible connection of this exudation with sexual 
relationships has never yet been studied, it is impossible at 
present to say whether the quantity varies with the maturity 
of the worm. My own researches have led me to think this 
is the case, and that the matter should be investigated from 
that point of view. 
The head is small, and cuts nearly one half of the first 
segment, whereas in the genus Lumbvicus it forms a perfect 
mortise and tenon. The male pore is on segment 15, and is 
seated on either side on prominent, pale, opaque papillae. 
The girdle extends over 6 segments (30-35), and stands well 
out from the body. It is closely fused on the back, but 
beneath the segments can be very clearly distinguished. The 
band which constitutes the puberty pores (tubevciila pubevtatis) 
stretches along the under surface of segments 31-34, and even 
when the clitellum is as yet unformed the position of this 
band in relief serves to mark off those segments from the rest. 
The setae are disposed differently from those of the true 
earthworm (Lumbvicus tewestvis , L.) and the related species. 
Rosa states the arrangement thus : “ The space between the 
inferior and superior pair of setae is a little less than that 
between the ventral setae, but nearly (or about) double that 
between the dorsal. The medio-ventral space is double that 
between the setae of the ventral pair; the dorsal space is 
double the first, and six times that between the dorsal setae." 
A diagram is necessary to make this point clear to the un¬ 
initiated. There are papillae on the underside of segment 25 
or 26, which are in some way connected with the sexual 
organs. Internally we find four pairs of seminal vesicles, 
those in segments 9 and 10 fixed to the anterior side of the 
septum, and in 11 and 12 on the posterior face. There are 
two pairs of spermathecae in segments 10 and 11, which 
open in the intersegment 9-10, 10-n in the direction of the 
third row of setae ; and I am able to confirm Dr. Rosa’s later 
statement to the effect that the opening is in the segment 
containing the organs, and not in the preceding. I have as 
yet found no spermatophores on this species. 
