This is shown by the labial commissure and pedal cords of the nervous system, by the opening of the gonad into the right kidney, and by other points.
- The Common Limpet (Patella vulgata) in its shell, seen from the pedal surface.
On account of their position they were termed by him the " capito-pedal orifices," being placed near the junction of head and foot.
Ab, Abdominal ganglion or site pe, The right pedal nerve.
Ceiving nerve from vis ce.pe, The cerebro-pedal connecceral loop.
P, Pedal nerve.
O, Otocysts attached to the cerebro-pedal connectives.
- Scutum, seen from the pedal surface.
P, Pedal ganglion with otocyst attached.
The most important of these opens by the ventral pedal pore, situated in the median line in the anterior half of the foot.
Cunningham that in Buccinum the egg-capsules are formed by this pedal gland and not by any accessory organ of the generative system.
Fusus, Pyrula, Purpura, Murex, Nassa, Trophon, Voluta, &c. The float of the pelagic Janthina, to which the egg-capsules are attached, probably is also formed by the secretion of the pedal gland.
Forms and in terrestrial genera such as Cyclostoma; (2) the anterior pedal gland opening into the anterior groove of the foot, generally present in aquatic species; (3) dorsal posterior mucous glands in certain Cyclostomatidae.
Leydig, that the otocysts of Pectinibranchia even when lying close upon the pedal ganglion (as in fig.
Shell spiral; four cephalic tentacles; eyes absent; two pedal appendages.
Pe, Pedal ganglion.
C, Doris (Actinocyclus) tuberculatus (Cuv.), seen from the pedal surface.
B, Pedal ganglion.
E, Pedal commissure.
That it is the first positive pedal of a rectangular hyperbola with regard to the centre.
It is the inverse of a central conic for the focus, and the first positive pedal of a circle for any point.
A pair of pedal otocysts, and a pair of osphradia at the base of the gills, appear to be always present.
19), consisting of a cerebro-pleural ganglion-pair, united by connectives to a pedal ganglion-pair and a visceral ganglion-pair (parietosplanchnic) .
1, Posterior (pedal) adductor muscle of the shells.
Left pedal ganglion.
When the pedal aperture is small and far forward there may be a fourth aperture in the region of the fusion behind the pedal aperture.
- View from the ventral (pedal) aspect of the animal of Arca noae, the mantle-flap and gill-filaments having been cut away.
I (6), ax) are the typical pedal ganglia; they are joined to the cerebropleural ganglia by connectives.
B, Pedal ganglion-pair.
The same name is also given to the first positive pedal of any central conic. When the conic is a rectangular hyperbola, the curve is the lemniscate of Bernoulli previously described.