BY J. J. FLETCHER, 
1525 
The last pair of hearts is in segment xii. The first complete 
mesentery is in front of the gizzard ; the next six are veiy thick ; 
the next tvo thinner, but thicker than those which follow. 
Xephridial tubules or tufts of tubules numerous, minute ; most 
conspicuous in segments ill and iv, though more so in the next 
few segments than further back ; in about the last forty segments, 
in addition to small tubules, there is a series of larger ones, one 
on either side of the nerve cord in each segment, doubtless com- 
parable with the large posterior nephridia described by Professor 
Spencer in J/. australis. 
In other repects agreeing with J/. Camdenensis. 
Hah. — Mt. Kembla, Illawarra, N.S.W. (collected by Mr. A. G. 
Hamilton). 
This species comes nearest to M. Camdenensis, from which it 
diflfers in haAung fewer segments, the clitellum including a segment 
or two less, and the outermost row of setae on each side irregularly 
sinuous, as well as in the anatomical characters above mentioned ; 
probably also the colour is distinctive, but 1 have not seen living 
specimens. 
Megascolides (?) (Notoscolex) pygm-eus, n.sp. 
Tlie complete individuals out of twelve (spirit) specimens from 
50-85 mm. long, from 2-4 mm. broad ; number of segments from 
about 145-200. 
Colour pallid but with a tinge of brown. Prostomium divides 
buccal segment only partially (not half). 
Setae of the outer couples further apart than those of the inner 
ones. 
Clitellum : several specimens (juv.) without any sign of it, in 
the others variously developed, but in none has it quite reached 
its maximum ; comprising segments xiv-xviii together with some 
portion of xix, ventrally in front of xvii not so thick as to obscure 
97 
