Tentacular blood-vessel arising from the cut arm-vessel in the small arm-sinus.
His health was never very strong, and in 1858 he broke a blood-vessel.
Beneath each food-groove was a radial water-vessel and probably a nerve and blood-vessel, all which structures passed either between certain regularly arranged thecal plates, or along a furrow floored by those plates, which were then in two alternating series.
Sulla sent for him and had him strangled in his presence; in his excitement he broke a blood-vessel and died on the following day.
In this worm the ventral blood-vessel is so swollen as to occupy nearly the whole of the available coelom.
