1552 
NOTES ON AUSTRALIAN EARTHWORMS, 
Genitalia : two pairs of vesiculse seminales, in ix and xii, Sper- 
mathecie two [three or even four] pairs in segments viii and ix 
[and VI and v], with caeca as long as the pouch and its duct 
together. 
In each of segments vii-ix there is a pair of conspicuous tufted 
organs consisting of a roundish mass of tubules lying in front of 
the posterior mesentery with a stalk or duct reaching forward to 
the anterior mesentery a little dorsad of the spermathecal ducts. 
Attached to the ccelomic wall just behind the mesenteries are 
numerous tubules — probably nephridia. 
In other respects this species calls for ixo special mention. 
llah . — The shores of Lake Alexandrina, S.A. (collected together 
with specimens of P. exigua var. M^irrayana near the water’s edge 
under rotten vegetable matter, by Dr. Stirling in Novembei’, 1887. 
Coll. Adelaide Museum). 
Ohs , — This species is apparently closely allied to P. fecunda. 
I cannot find sufficient difference to justify the separation of 
of the two specimens with more than two pairs of spermathecm as 
a different species, and at present I regard them as individual 
variations. On the whole I find the number of these organs very 
con.stant in the different species. 
Perich^eta attenuata, n.sp. 
Six complete somewhat contracted (spirit) specimens are from 
60-100 mm. long, and 2-3 mm. broad; number of segments about 
180-220. [Four other incomplete but otherwise good specimens 
also examined]. 
Colour pallid. Prostomium only slightly divides the buccal 
ring (less than half). Body slender ; segments with fewer annuli 
than in P. Coxii, after the first two or three usually more or less 
con-spicuously tri-annulate, in the posterior region where the setae 
are most numerous the annulation absent but the ridges carrying 
the set® very couspicuous. 
