152S 
NOTES ON AUSTRALIAN EARTHWORMS, 
Probably of the nature of accessory genital structures are ridge- 
like swellings of the anterior annuli of viii and ix between the 
pairs of spermathecal pores. 
Alimentary canal ; three gizzards in consecutive segments, 
v-vii ; in segments x-xiv are five pairs of calciferous pouches, not 
quite so completely pinched oflf as, e.g., in some sj>ecies of 
CryptodrUns', perhaps an intennediate condition between this and 
the globular dilatations in P. excavata ; the large intestine com- 
mences al*out XVII, and is pro^'ided with a typhlosole. 
Genitalia : two pairs testes and ciliated rosettes in x and xi ; 
three pairs of vesiculae seminales in ix, xi, and xii ; prostates in 
xvill, with short thick genital ducts (not so short, however, as in 
P. excavata), behind and close to each of which, and probably 
communicating with the exterior through the male pores, are two 
minute sacs containing several thin, slightly curved, and tapering 
penial setae, about 1 mm. long without allowing for the curve : 
the two vasa deferentia join the ducts close to the gland. Sperma- 
thecae two pairs in viii and ix, nairow cylindrical pouches ■with 
veiy short ducts, each with a small lobed knob-like caecum. 
Nephridia ; a number of small tubules (not so numerous as in 
P. excavata) in each .segment ; in some of the posterior segments 
the ventral row on each sida larger, a condition which does not 
seem to obtain in P. exxavata. A pair of large tufted organs, 
probably .salivary glands, in segment iv. 
The last pair of hearts in xiii. 
Hob. — Gosford, N.S.W. (in brush land). 
This species is readily distinguishable from P. exxavata by the 
body being much less robust, though compri.sing as many or even 
more segments, the pattern and arrangement of the supposed 
accessory copulatory structures being different, dorsal pores being 
present throughout after about segment x or xr, whereas in 
P. excavata either they are absent or at most about twenty — and 
these small or rudimentary — are visible just near the posterior 
extremity. 
