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Between the ovario-cardiac ligament and this process lies the small oval aperture already described by Professor Owen, which gives passage to the siphonal artery.
From Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology by Various
As a rule, the lamellibranchiate molluscs have both valves united, and many of them, such as Mya arenaria, stand with the siphonal end upward, as when in a living state.
From The Student's Elements of Geology by Sir Charles Lyell
On the other hand, the very distinct and long siphonal tube delineated in Mr. Macgillivray's drawing, taken when the animal was alive, would seem to refer this genus to some family probably near to Cancellaridae.
The siphonal groove can be seen on the upper side of the figure.
From Beautiful Shells of New Zealand An Illustrated Work for Amateur Collectors of New Zealand Marine Shells, with Directions for Collecting and Cleaning them by E. G. B. Moss
The oval "aperture for the siphonal artery" is seen to the left of c', and the right-hand style in Fig.
From Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology by Various
