MONILIGASTER GRANDIS, A. G. B. 321 
number of bands of muscle attached round the outside of the 
anterior portion of the gizzard, free along their length, and in- 
serted into the cylindrical portion of the csophagus in the 
region of the septum (fig. 23). 
In Segment xx111 the wall still remains firm and tough. In 
the ten segments, xxIv to xxx1tt, lies the portion of the canal 
which corresponds to the tubular intestine of other worms. In 
the whole of this region there lies embedded in the thickness of 
the mucous membrane an enormous number of tubular glands, 
the apertures of which may be seen with a strong lens as little 
round holes on the surface of the mucous membrane. I have 
generally found this portion of the canal empty and much 
shrunk, and consequently immediately obvious, being smaller 
than the region which follows, but I have found it full of earth 
and distended, in which case it looks from the outside just like 
the rest of the intestine. 
The “saccular” intestine is very slightly constricted by the 
septa, and changes very little in character throughout its whole 
length. In about the last eighty segments its walls become 
rather stronger, and its blood-supply becomes much diminished; 
we may term this the rectal region. 
There is no typhlosole. 
The alimentary epithelium consists in the buccal region of 
small columnar cells very closely set, and there are no glands. 
In the pharynx, in the epithelial layer covering the protrusible 
dorsal wall there are no glands, but between the ordinary cells 
the salivary glands open in immense numbers. ‘These salivary 
glands are obviously masses of epithelial cells which have taken 
up a deep-lying position and a grouped arrangement, but each 
cell retains its connection with the surface, and pours out its 
secretion into the pharynx. These salivary glands, which are 
thin masses of unicellular glands, lie upon the bands of muscle 
which connect the pharyngeal wall with the body-wall. There 
are four pairs of such masses lying immediately anterior to 
such muscle bands, and a much larger median mass lying im- 
mediately behind the pharynx (fig. 17). In the epithelium of 
the ventral wall of the pharynx there is an enormous number 
