552 TRANSLATIONS FROM CONTINENTAL JOURNALS. 
anterior third of the length of the body, they are very slender 
at their origin, and gradually swell out until they acquire the 
diameter which they preserve throughout. One of these 
ovarian tubes directs its course, at first forward, then making 
a curve a little above the part where the oesophagus ter¬ 
minates, continues its course, making many sinuosities, until 
within a little distance from the end of the tail. There it 
makes another curve, and remounts to the anterior part, where 
it makes a third curve, which is the most anterior of all. After 
this last curve it terminates in a long pouch, filled with eggs, 
and which might be considered as a peculiar uterus, that 
gives rise to a slender, tubular, oviduct, terminating in a sort 
of vestibule, into which the vulva opens, and on the opposite 
side of which the other oviduct also terminates. The other 
ovary directs its course backwards, doubles once on itself 
afterwards, continues in the same backward direction, forms 
at a short distance from the tail a turn, after which it takes 
an anterior direction, until it arrives opposite the spot where 
the first ovaria turn about, when it also is reflected and takes 
again a backward course, until it gets within a short distance 
from the tail, where it makes a last turn, and finally terminates 
in a similar uterus to the one which has already been described. 
From this uterus emanates a peculiar oviduct which goes to 
meet the other in the common genital vestibule. The vulva 
which opens in this vestibule is situated from 6 to 8 mm. 
from the mouth, and from 3 to 4 mm. from the end of the tail. 
The eggs are elliptic, and covered with a transparent envelope, 
their greatest diameter is from *074mm. to *078mm., and 
their smallest from *048 mm. to *054 mm. The females of 
the worm of the blood-vessels and of the heart are from 11 to 
21 millimetres in length. The tail is less distorted than that 
of the male, and terminates in a somewhat obtuse point. 
They have two ovaries, which run parallel with one another 
during the whole of their course; they take their origin a 
little below the termination of the oesophagus, and descend, 
twisting in divers ways round the intestine, until they reach 
to within a short distance from the point of the tail. Towards 
the posterior third of their length they decrease to a slender 
tube, which soon opens into a much larger tube. These two 
larger tubes converge, and confound themselves in a com¬ 
mon uterus of moderate size terminating by a short, narrow 
oviduct. This latter opens into the vulva, which is situated 
•30mm. to •32 mm. from the end of the tail. The eggs are 
elongated, somewhat swelled out in the middle, obtuse at 
each end, and are provided with a very transparent envelope; 
their length is from *04 mm. to ’05 mm. The Dachmius, the 
