258 FRANK E. BEDDARD. 
glands, too, were of a more regular form, and showed no 
modification of the peculiar cells of the gland such as occurs in 
places in the gland of Stuhlmannia. I have now to record the 
structure of the corresponding glands of Eudriloides Finni. 
In this worm the glands are rather different in the details of 
their histology. There are pairs, but there is not always an 
absolute separation between the glands of adjacent segments. 
In a few cases I have found that there is a communication 
from segment to segment. The tissue composing the glands is 
for the most part exactly asin Stuhlmannia. The glands, 
however, are more irregular in form and the blood-vessel is 
much more coiled ; where it (the blood-vessel) leaves the gland 
the tissue surrounding it is reduced to a comparatively thin 
layer. As the vessel with the surrounding tissue is much coiled, 
the appearances of a transverse section through a portion of 
the gland are much as is shown in fig. 15. This section pre- 
sents a most curious resemblance to a section through the 
thyroid gland. It has every appearance of tubes of columnar 
epithelium surrounding a lumen which is filled with a homo- 
geneous secretion ; this “secretion” is nothing but blood. I 
have, of course, traced the supposed blood-vessels into connec- 
tion with the vascular system. The modification of the tissue 
of the gland is not gradual; here and there it suddenly passes 
into the tissue illustrated at c in fig. 15. The tissue in ques- 
tion stains much more darkly than the rest of the gland, the 
granules in the cells which compose it are disposed in a radiate 
fashion, and the cells have acquired a columnar appearance, of 
which indications are observable in Stuhlmannia, as I have 
already pointed out. The specialisation of the cells is much 
more marked in the present species. It will be clear, at least 
from the figures which illustrate the foregoing description, 
that the glands which I call “calciferous” are not only different 
in the three genera referred to from those of other Eudrilids, 
but are also different—very different—from the corresponding 
glands of nearly all other earthworms. The only genus which 
at all approaches these Eudrilide in the structure of its calci- 
ferous glands is my genus Gordiodrilus. In all the species 
