460 W. BLAXLAND BENHAM. 
Affinities.—The present worm, which I have regarded as 
a new species, presents certain resemblances to K. longus and 
to K. kelleri; but from the former it differs in the number 
and arrangement of the spermathece, which are there in two 
groups of eight on each side, belonging to the rings 25 and 
26 (probably to segments x1v and xv). It has, further, an 
elongated prostomium, the bursa propulsoria is “ disc-like,” 
and flattened in the longitudinal direction, and the prostates 
are pear-shaped (“ birnformige ”). 
From K. kelleri the prostate of the bursa (Rosa’s “ pseudo- 
prostate ”’) is ‘‘ zipfelformige ; ” those of the penial cheetophores 
are “birnformige.’? As mentioned above, the ordinary 
cheetz of these two species are without a “ node.” 
From K. madagascariensis the present worm differs 
in that this species has numerous small spermathece in 
three rows on each side, as well as in other matters of detail, 
such as the form of the prostates, &c.; whilst K. michaelsenii 
is evidently a different species, for it only has two pairs of 
penial chetophores and prostates. 
Postscript.—Since this paper was written, two new species 
of Kynotus have been described by Michaelsen (‘‘ Zur Kennt- 
niss der Oligochaeten,’’ in ‘Abhandl. aus dem Gebiete d. Natur- 
wisseuschaften,’ Bd. xiii), in which he makes some further 
observations on the peculiar annulation of the body wall. 
The species are K. oswaldi and K. distichotheca, both 
of which differ in various points from the above-described 
form. 
K. oswaldi presents a clitellum of considerable length, 
occupying eighteen segments, viz. x1x to xxxvil. In both, the 
male pore is on the 26th ring; but from observations on the 
relation of nephridia and septa he believes this to be the six- 
teenth segment, whilst Rosa finds it on the fifteenth (ring 23) 
in K. michaelsenii, which he has re-examined. His enume- 
ration of the segments is different from that given by me for 
K. cingulatus. The first strong septum lies between the rings 
7 and 8, and in front of it are three pairs of nephridia, the first 
pore being in front of the 3rd ring; he therefore considers 
