They've got a plate on the sole so your feet don't get numb and they hold on to the pedal better.
P, Pedal nerve.
Cunningham that in Buccinum the egg-capsules are formed by this pedal gland and not by any accessory organ of the generative system.
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.
O, Otocysts attached to the cerebro-pedal connectives.
- Scutum, seen from the pedal surface.
At the same time, the junction of the visceral loop above the intestine prevents in all Streptoneura the shortening of the visceral loop, and it is rare to find a fusion of the visceral ganglia with either pleural, pedal or cerebral - a fusion which can and does a, Anus.
The Pectinibranchia the pedal nerves are br, Ctenidium (branchial distinctly nerves given off from the pedal plume).
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.
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.
Pedal centres in the form of ganglionated cords; kidney provided with a ureter; viviparous; fluviatile.
Oesophageal pouches present; pedal nerve-centres concentrated; a pedal penis near the right tentacle.
Shell spiral; four cephalic tentacles; eyes absent; two pedal appendages.
V, Pleural and pedal ganglion c, Eye.
Animal fixed by the shell, the last whorls of which are not in contact with each other; foot small; two anterior pedal tentacles.
Pe, Pedal ganglion.
C, Doris (Actinocyclus) tuberculatus (Cuv.), seen from the pedal surface.
B, Pedal ganglion.
E, Pedal commissure.
We have already seen that De Blainville, though fully persuaded of the great value of sternal features as a method of classification, had been compelled to fall back upon the old pedal characters so often employed before; but now the scholar had learnt to excel his teacher, and not only to form an at least provisional arrangement of the various members of the Class, based on sternal characters, but to describe these characters at some length, and so give a reason for the faith that was in him.
The pedal equation is r 3 =a 2 p, which shows FIG.
That it is the first positive pedal of a rectangular hyperbola with regard to the centre.
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.
Left pedal ganglion.
B, Pedal ganglion-pair.