Niciiolls and JacKvSOn. — New Species of Megaloscolcx. 143 
Out: A larg'O gizzard orrurs in sognient (J. Thorc 
are no caleifevous glands, and the mid-gut is nitliout a typhlosole- 
Circulatory system: The last heart is in segment 13. 
Xephridial system: Micronephridia occur throughout the length 
of the worm. 
Male reproductive organs: Thei'o are three' jiairs of sperm sacs 
2 ")rojecting from septa 0/10, 10/11, 11/12 into segments 10, 11, and 
12. Tliey are slender and rather finger-like in appearance, the first 
pair being slightly smaller than the other two. The si)ermiducal 
glands lie in segments 18. They are flattened and leaf-like and have 
an S-shaped muscular duct. 
The spermathecae (PI. XVTIT, fig. 2) are ])ear-shaped and have 
a long, slender diverticulum whiOi is from five to six times as long 
as the spermatheca itself. This diverticulum is sometimes loosely 
coiled, and may extend straight backwards through several 
segments. 
Megascolex swarbricki sp. nov. 
Plate XVITT, Pigs. G-10. 
Numerous specimens of this ivorm wt're found at Nornalup, undei 
logs in swampy patches along the banks of the Deep Piver, and also 
from beneath logs in some of the damper valleys running down, to 
the Prankland Piver. Their uiuisnal size and glandular arrange- 
ment servo to distinguish them from any species previously described. 
The new species is named in compliment to Mr. T. II. Hwarbrick, to 
whose enthusiastic assistance the field instruction class of the Biology 
Department of the University was greatly indebted. 
Specific Diagnosis. Length, IfiO mm.; breadth 5 mm.; number 
of segments, about 188. 
Colouvins’; Dorsally, greyisli-brown ; ventrally, yollowisli-wliite. 
Tlic> clitcllum is siiil<lU'-slia]>cd and extremely thi(d? (PI. XVII 1, 
fig. 8), and extends over segments 13 to 11). In the anterior ],art of 
tlie I3th segment, and posterior part of the lOtli, it is dorsal only, 
but in segment 18 it passes ventrally as far as setal line e. 
In transverse section it is seen to consist of a thick layer of 
unicellular glands which open to the outer surface of the elitellmn. 
Each gland consists of an oval nucleated cell and a narrow duct, 
which is of course much longer in the case of the deep-seated cells 
than of those near the surface. Between the glands may he made 
out the many fine liranchiiig bloodvessels. 
The head is taiiyloliate, the dorsal ])rojection of the prestomium 
liaviiig a distinct transverse furrow at the base. 
