NOTES OX AUSTRALIAN EARTHWORMS. Pakt Y. 
By J. J. Fletcher, M.A., B.Sc. 
Twenty new species, mostly from New South Wales, but with 
a few from Queensland and South Australia, are described in this 
paper, the gross anatomy, as in previous papers, being taken into 
account. They include, besides additions to the genera Mega- 
scolides (Xotoscolex), Perissogaster, Digaster, and Perich<Eta, eleven 
species of Cryptodrilv.s, which, with four already described, make a 
rather heterogeneous collection of post-clitellian worms [with four 
couples of set£e to a segment, male pores on xviii, a single gizzard, 
and in such cases as they have been visible a single pair of vasa 
deferentia] among which it is possible to pick out a well-marked 
group of which C. mediterreus may be taken as the type, and a 
second smaller group of the type of C. saxcanus ; the remainder 
differ among themselves and from these so much as not at present 
to permit of their being satisfactorily sorted into sections. As every 
considerable acquisition of new material throws fresh light on tliis 
matter it would be premature just now to attempt to separate any 
of them as types of new genera. Nevertheless worthy of mention 
lire C. fdstigatus with three pairs of nephridiopores to a segment, 
and two pairs of prostates, the two prostatic ducts of each side, how- 
ever, uniting to form a single genital duct ; C. unicus with a single 
median series of spermathecal and male pores — an intermediate 
condition Ijetween this and the rather ^videly separated pores in 
forms like C. Sloanei being offered in C. manifest us ; and C. 
sitigularis with but single pairs of testes, ciliated rosettes, and 
vesicula) — a condition which obtains also in JfegascoUdes (Xoto- 
scolex) lUawarra: also Perichata attenuatcu o-nd P. enormis of the 
type of P. Coxit, which, in the middle and |*osterior regions of the 
Ixxly are more or less jjeric/utiie, while for some distance the 
anterior setigerous segments have four couples of setre like a 
Cryptodrilus. 
