MAY. 19, 1923 COBB: AMENDATION OF HOPLOLAIMUS 213 
long-clavate swelling which at its widest part is one-fourth as wide as the base of 
the neck. It is however natural to imagine the swollen salivary glands to be 
joined with this inconspicuous posterior portion of the oesophague and thus at 
first to get an idea that the posterior part of the oesophagus comprises a wide 
clavate swelling, three-fourths as wide as the base of the neck. We may say 
therefore that the oesophagus behind the pharynx is about one-seventh, at the 
nerve-ring also about one-seventh, and finally about one-fourth as wide as the 
corresponding portion of the neck. ‘The lining of the oesophagus is a distinct 
feature arteriorly and consists of a narrow highly refractive tube; posteriorly 
the lining is inconspicuous. The musculature is fine and colorless. There are 
three salivary glands clustered opposite the posterior two-fifths of the oesopha- 
gus. One of these cells comprises the anterior portion of the cluster, while the 
other two may lie more or less opposite each other as the posterior part. 
The salivary glands are very well developed, and two of them, 
submedian, empty through ducts into the base of the valve of 
the median bulb, while the third, the dorsal, passes forward and 
empties into the dorsal side of the oesophageal lumen not far 
behind the base of the onchium. At the mouth of each duct 
a faint ampulla is usually visible. The median oesophageal 
bulb presents a spheroidal, simple, strongly refractive 
valve one-sixth as wide as the bulb itself. There’ is no 
distinct cardia. The thick-walled intestine, which presents 
a distinct refractive lumen, is not set off from the oesoph- 
agus by a cardiac collum, the change from oesophagus to 
intestine being gradual. The intestine has its cells closely 
packed with granules of variable size, the largest being 
one-twelfth to one-sixteenth as wide as the body. These 
colorless, non-birefringent, spherical granules gradually de- 
crease in number in the cardiac region and cease altogether 
opposite the posterior portion of the salivary glands; they are 
sometimes so arranged as to give rise to a tessellated effect. ace Nea 
The intestine somewhat gradually becomes four-fifths as wide ase aus au 
as the body, and is composed of cells of such a size that two to a semi-contour of the 
three are presented in each cross section. The cells of the body in the same 
intestine are so closely packed with granules as to make it 7 wake ae 
difficult to examine successfully in living specimens details “°°” 
of the anatomy of adjacent organs. The exceedingly small 
anus and the rectum are very inconspicuous. Thereisnopre-rectum. The tazl 
is of an elongate hemispheroid form, very broad and rounded at the extremity, 
and symmetrical. There is no spinneret and there are no caudal glands. 
Measured at the latitude of the nerve-ring, the lateral chords are as wide as the 
cuticle is thick, or wider; somewhat farther back, they are about one-third as 
wideasthe body. They contain scattered colorless refractive spherical gran- 
ules of variable size, considerably smaller than those of the intestine. Behind 
the base of the neck, at a distance about equal to the diameter of the body, 
there is a cell which presses the intestine well to one side. This cell is about 
as long as wide but not spheroidal. It is finely granular, one-half as wide as 
the body, and seems very probably to be connected with the renette. The 
excretory pore, which is opposite the base of the neck, is rather distinctly to be 
seen, though of small size. It lies between two annules, and the nearer stria- 
tion swerves a little to one side for it. The renette duct leads inward and to the 
right along theright lateral chord. Fromthe somewhat depressed, rather large 
and rather conspicuous vulva, which is a transverse slit two-fifths as long as 
