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Michaelsena normani, n. sp. — Brunswick, in a stream. Relation- 
ship of this species to M. subtilis (Ude). M. nor- 
mani, probably a marine species immigrated 
from the sea into the river and its tributaries. 
Fridericia galba (Hoffm.). — Albany, in swampy ground ; widely 
distributed species, no doubt imported by man. 
Family HAPLOTAXIDAE. 
Genus Pelodrilus . — Discussion of the relationship of this genus 
to Haploluxis. 
Pelodrilus darlingensis, n. sp. — Collie, in swampy ground. Re- 
lationship of this species to P. africanus. 
„ hologynus, n. sp. — Yarloop, Harvey, in wet earth in 
the banks of a stream. Intermediate between the 
genera Haplotaxis and Pelodrilus as before deter- 
mined. Relationship to the Siberian species, P. 
ignatovi (Michlsn.). 
Family MEGASCOLECIDAE. 
Sub-Family Acanthodrilinae. 
Genus Eodrilus, nov. gen. — Separated from the older and larger I 
genus Microscolex (N ctiodrilus) type species : Eodrilus corni - 1 
gravei, n. sp. — Discussion of the Sub-Family Acanthodrilinae 
and new arrangement and definition of its genera. 
Eodrilus conigravei, n. sp. — Cannington, in swampy ground. 
Microscolex dubius (Fletch).. — Widely distributed species, im- 
ported by man ; one of the two commonest species 
in S.W. Australia ; found in nearly all the ter- 
restrial localities visited, as well as in a littoral one 
near Dongarra. 
,, phosphorous (Ant. Dug.). — Cannington, Donnybrook ; 
widely distributed species, introduced by man. 
Sub-Family Megascolecinae. 
Discussion of the morphological and systematic relations in this 
sub-family, and new definition and arrangement of its genera. 
Plutellus termitophilus, n. sp. — Lunenberg, in the comparatively 
hard earth of Termites’ (white ants’) nests. 
,, wellingtonianus, n. sp. — Collie, in wet earth. 
,, strelitzi, n. sp. — Lion Mill, in comparatively hard and 
dry earth beneath stones. 
,, vvoodwardi, n. sp. — Collie, in swampy ground under logs. 
,, levis, n. sp.— Cannington, in swampy ground under 
stones. 
„ murrayensis, n. sp. — Jarrahdale. 
„ mendilai, n. sp. — Eradu, under stones on the banks of 
the nearly dried up Greenough River. 
,, blackwoodianus , n. sp. — Bridgetown, under stones in the 
bush. 
