BY J. J. FLETCHER. 
1527 
Except that this species is intraclitellian, at present I know of 
no characters particularly entitling it to be placed in the genus 
Megascolides. It is one of the species which seems to be more or 
less intermediate in character between this genus and the typical 
species of Cryptodrilus. 
For specimens from Mt. Kembla, the first which I saw, I am 
indebted to Mr. Hamilton ; subsequently I found others in the 
neighbourhood of Kiama. 
Perissogaster nemoralis, n.sp. 
Of five rather contracted spirit specimens three only (one 
rather bruised) are whole ; 10-13 cm. long, 4-6 mm. broad ; 
number of segments, 195-245. 
Colour pallid or flesh-coloured. Prostomium appears to divide 
the buccal ring slightly. 
Setse in eight longitudinal rows, those of the two outer couples 
further apart (about twice as far) than those of the inner ones. 
Clitellum comprising segments xiv-xviii, sometimes together 
with a portion of xiii, complete all round except that between 
XVI and XVII, taking in the posterior annulus of the former and 
the anterior one of the latter, is a pair of papillae just dorsad 
of the inner couples of setae, or they may become more or less 
fused so as to form an intersegmental ridge ; while the ventral 
portion of the middle annulus of xviii is tumid as far outwards on 
each side as the papilla? just mentioned, the ^ pores on two little 
eminences about corresponding with the intervals between the inner 
couples of setae ; between xviii and xix is another pair of papillie 
corresponding with the first pair, and more or less fused with a 
somewhat ridge-like swollen portion of the middle annulus of xix. 
Between xix and xx, and exceptionally also between xx and xxi, is 
an intersegmental ridge-like swelling reaching outw'ards on each 
side to a little beyond the inner couples of setie. 
8]»ermathccal pores two pairs, between vii and vin, and viii 
and IX, about in line with or a little dorsiul of the first setie. 
Horsal pores commence after about segment x. 
