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Transactions of the Society. 
three different sorts of cells : (a) ciliated columnar cells ; (i b ) goblet 
cells with granular contents ; and (c) peculiar j_ -shaped cells, which I 
have not observed in other worms ; these cells contain small spherical 
globules, and stain very much more deeply in borax-carmine than do 
the other constituents. 
Although the dorsal wall is very slightly pushed inwards by 
the dorsal vessel, in some sections this feeble typhlosole is scarcely 
recognizable, and I am doubtful whether it is a real structure, or only 
artificial (fig. 13). 
The calciferous glands present a peculiar asymmetry. There 
are two pairs, slightly differing in structure (see figs. 5, 6, 7, 8). The 
second pair is bilobed externally ; the main part occupies somite XI, a 
smaller lobe lying in somite XII. This hinder pair of glands is 
symmetrical. 
The anterior pair, which are not lobed, are affected by a 
curious asymmetry ; on one side there is gland in somite IX, on the 
other in somite X (see fig. 5). All these glands communicate with 
the intestine on its ventral surface (fig. 6). Each gland consists of a 
sac, the cavity of which is broken up by a large number of trabecuko, 
containing blood-vessels, the whole cavity being fined by a striated 
cubical epithelium. The structure of the two glands is somewhat 
different. The posterior gland has a much more extensive lumen 
(fig. 8) and numerous thin and incomplete trabeculae, or lamellae ; 
whilst in the anterior gland these lamellae unite (fig. 7) and interrupt 
the lumen to a greater extent than in Lumbricus and other forms, 
resembling the calciferous gland of Urobenus, figured by me in 
Q. J. M. Sci., xxvii. pi. ix. fig. 43, and the “ Chylustaschen ” of 
Polytoreutus Mich. The posterior gland with its numerous free 
infoldings of the wall, resembles more nearly the calciferous glands 
of Lumbricus, the ventrally placed gland of Eudrilus,* and the 
modified wall of Biachaeta Windlei.\ But none of these authors 
figure the striation of the fining cells (fig. 9). 
Genital system (fig. 16). — A single pair of testes situated in 
somite XT. and a pair of ciliated funnels in the same somite constitute 
the only definite male organs. The duct I can trace through septum 
XI /XII, but no further. A structure, which I take to be the sperm- 
sac , lies in somite XII attached to the septum XI /XII, close to the 
funnel ; it is empty of young or developing spermatozoa, and in fact a 
lumen is difficult to detect ; the wall is made up of small cells, and a 
network of blood-vessels is present. There is a pair of these structures. 
I can find no prostate, nor could I detect the sperm-pore. 
Of the female organs, I find the ovary in the usual somite, X III ; 
and behind it the funnel of the oviduct, which passes into the next 
segment and leads into an apparently solid mass of cells, which I take 
to represent the future ovisac. I can find no spermathecse. 
* Beddard, P.Z.S., 1887, pi. xxxviii. fig. 3. 
t Beddard, Q J. M. Sci.. xxxi. pi. xx. figs. 10, 11. 
