242 Dr. W. B. Benham on an 
dium is similarly situated with regard to the second ciliated 
rosettes. 
I did not trace out the following nephridia, and am unable 
to say definitely how many there are in this series. Beddard 
found fourteen pairs in 22. Gulielmus following the pepto- 
nephridium, differing from it and also from the following 
series, which, commencing in somite xvii., are smaller, have 
no long duct, and are less readily followed. 
The alimentary tract (fig. 2) presents a gizzard in somite 
vii., as determined by tracing out the nephridia ; it lies, how- 
ever, at the level of somites viii., ix., X., appearing to occupy 
three somites, as Horst describes for R. Yenkatei; but the 
present species agrees with the other two in having the 
gizzard confined to one somite. 
Immediately behind it there are the characteristic paired 
diverticula of the tubular intestine (figs. 2 and 3, div.) ; they 
contain crystalline particles which I took to be carbonate of 
lime ; but I obtained no effervescence on treating the organ 
with weak and with strong acid. Nevertheless they have a 
structure closely similar to that of the cesophageal (calcareous) 
diverticula— glandes de Morren”—in Lumbricus, as my 
predecessors have noted. In the present specimen there are 
seven pairs of these diverticula, all very close together, though 
probably occupying as many somites. The first gland is 
small and\ventro-laterally placed, and might readily be over- 
looked in a strictly dorsal view ; the next three are larger 
and kidney-shaped; the following three gradually dimimish 
in size and are hemispherical. Both in &. Tenkatet and R. 
Gulielmus there are six pairs of these diverticula, agreeing in 
the main with those just described; and it is a most curious 
fact that in the “type” of the genus Perrier makes no 
mention of them. It is true they are hidden by the sperm- 
sacs and “ hearts ;’’ and as all these organs are closely packed 
together, it is reasonable to think that they were overlooked, 
though I believe, as I state below, that he did see these 
glands, but mistook them for “ hearts.” 
It is not easy to fix the true position of these diverticula 
with regard to somites, and it can only be really decided by 
making longitudinal sections through a complete uninjured 
specimen. but by tracing other organs we can place them 
in somites vill, to xvi. or in 1x. to xv., which agrees pretty 
well with Beddard’s species, in which he found the six pairs 
to lie in somites 1x. to xiv. 
The sacculated region of the intestine begins shortly behind 
these glands and is provided with a typhlosole, fairly well 
developed, compressed so as to be a thin membrane, and 
