1526 
N'OTES OS AUSTRALIAS EARTHWORMS, 
the intersegmental boundaries, but from this backwards enor- 
mously swollen and raised, obscui-ing the division between xviii- 
XIX. owing to the whole ventral surface of xviii to nearly as far 
dorsad as the third row of setae on each side becoming tumid and 
encroaching slightly on xvii and still more on xix ; in the imma- 
ture specimens without girdles corresponding with the intervals 
between the setae of the inner couples swollen into slight papillae, 
the setae themselves apparently wanting, or at least not visible. 
^lale pores on two slight depressions on the swollen ventral 
surface of xahii nearly corresponding with the interval between 
the setae of the inner couples but a little closer to the median line, 
dorsad and slightly behind each of which is in some specimens a 
second small papilla with what looks like a pore : spermathecal 
pores two pairs, in worms with girdles on distinct papillae on or 
just behind the anterior margins of viii and ix, opposite but a 
little dorsad of the first setae. Of the nature of accessory copu- 
latory structures probably are two intersegmental ridges between 
XIX and xx, and xx and xxi, reaching on each side to about the 
second row of setae, involving about one annulus of eaeh segment, 
and sometimes presenting a pitted appearance ; in one specimen 
similar ridges between xiii and xiv, and xiv and xv. 
Xephridio pores not visible. Dorsal pores commence after about 
segment xi. 
Alimentary canal : one pair of calciferous pouches underlying 
the intestine and occupying two segments, xii and xiil, con- 
stricted, and possibly representing two pairs ; large intestine 
begins in xv ; in each of segments v and vi a pair of large tufts 
of tubules, a smaller pair in vii, possibly salivary organs. 
Genitalia : testes and ciliated rosettes two pairs in x and xi ; 
vesieulfe seminales two pairs in xi and xii ; prostates in xviii, 
with short straight genital ducts. Spermathecse two pairs in viii 
and IX, each with a single very rudimentary caecum. 
Last pair hearts in xii. Nephridial tubules numerous, minute. 
Ilab. — lUawarra, X.S.W. 
