TRANSLATIONS FROM CONTINENTAL JOURNALS. 
555 
been found likewise in the Strongylus filaria , Rud., and the 
Oxyuris curvula, Rud. In the majority of the above-cited 
parasitic worms the salivary apparatus is composed of two 
glands, in the shape of a vesicle raised from the effect of a 
blister; they are situated a little below the termination of the 
oesophagus; on each side there emanates a long, slender canal 
which ascends along the intestine and the oesophagus, and 
terminates with an opening into the mouth. 
Nevertheless, in the Sclerostoma equinum, Duj., the salivary 
apparatus, studied by Blanchard, differs materially from the 
general disposition which we have given ; they in fact are 
composed of two long vesicles which extend beyond the 
termination of the oesophagus and which are slightly marnil- 
lated in parts and terminate in the posterior portion of the 
buccal cavity undiminished in diameter, and consequently 
without forming an excretory canal. Equally with M. Blan¬ 
chard we have found that the salivary apparatus varies very 
much in the different individuals which seemed to have 
attained an equal degree of development; in fact, sometimes 
we find two vesicles distended and turgescent throughout their 
whole length; at other times, on the contrary, they appear 
as if atrophied, and not the slightest trace could be found of 
their existence; while under other circumstances every 
possible intermediate between the two extremes was dis¬ 
covered. In the Sclerostoma tetracanthum , Dies., the two 
salivary glands situated just a little below the inferior extre¬ 
mity of the oesophagus are placed on the side of the intestine, 
both nearly on the same level. They are in the shape of two 
short ovoid vesicles, slightly distended in their centre, termi¬ 
nating posteriorly into a short, irregular, obtuse cul de sac . 
Each gland furnishes an excretory canal, very slender, and 
closely united in its course with the intestine and the oesopha¬ 
gus, terminating in the pharyngeal capsule with which this 
parasite is provided. The salivary vesicles of the Sclerostoma 
hypostomum , Duj., are likewise situated on the sides of the intes¬ 
tine, at some distance from the termination of the oesophagus. 
They are not both at the same height, one being a little lower 
than the other; the origin of its excretory canal corresponds 
with the cul-de-sac of the former. Both are elongated, piriform, 
and distended at the base, diminishing insensibly into a slender 
tube, which opens at the bottom of the pharyngeal capsule. 
The salivary glands in the Sclerostoma dentatum , Dies., are 
very similar to those of the Sclerostoma tetracanthum , Dies., 
the only difference being that both are placed on the same 
level, and on the side of the intestine, the salivary canal 
having the same disposition as the last described. As may 
