276 WILLIAM BLAXLAND BENHAM. 
ence of this substance, crystals of which could be seen in the 
section; so that in structure and contents it agrees with the 
cesophageal gland of Lumbricus. 
Such “ intestinal glands” have been described as occurring in 
Urocheeta (28), where Perrier calls them ‘‘ glandes de Morren,” 
and considers them as having the same function as the calciferous 
or cesophageal glands of Lumbricus. But while in this latter 
form they are in front of the gizzard, in Urocheta and in 
Microcheta they are posterior to it. 
(f) The Sacculated Intestine (ént. s.).—The tubular in- 
testine gradually widens in somite x11, till in the next somite 
it has increased to about three times its previous diameter, and 
in the succeeding somites retains this diameter, being, however, 
constricted as it passes through the septa; this gives this region 
a sacculated appearance. It has very thin walls, which, in the 
fresh state, have a cherry-red colour, due partly to the vascular 
network on its wall, and partly to the brown red granules in 
the large cells of coelomic epithelium covering the wall—similar 
cells to those on the intestine of Lumbricus. 
This region differs from the tubular intestine in the pos- 
session of a typhlosole (fy.), which commences in somite 
x1, and is continued nearly to the posterior third of the 
body. The typhlosole is cylindrical, and very large, nearly 
filling the lumen of the intestine; the brown-red vesicular 
coelomic cells are continued into it, and fill it, being traversed 
by the irregular typhlosolar trunk. 
A section across the wall of the intestine (Pl. XVI dvs, fig. 42) 
shows a condition very similar to that in Lumbricus. The intes- 
tinal epithelium (int. ep.) is thrown into ridges, and the cells 
are longer on the typhlosole than on the outer wall. The ma- 
jority of the cells are ciliated, and between them are some cells 
with granular contents which are stained by borax carmine; 
these are probably glandular (g/. c.) digestive cells. 
The muscular layers are more largely represented than in 
Lumbricus ; and between the circular muscles and the epithe- 
lium are the great blood sinuses, which form a close network 
on the wall. The large coelomic epithelium cells have the same 
