Each palpacle is a tactile filament, very extensile, without accessory filaments or nematocysts.
T, Tactile hairs springing from surface of body.
In their simpler condition they are long and many-jointed, the segments bearing numerous olfactory and tactile nerve-endings.
9, E) that cover the body of an insect have a tactile function.
This very effective and elaborate innervation, which has been directly traced to the brain, whence strong nerves (generally two) enter the proboscis, renders it exceedingly probable that the most important functions of the proboscis are of a sensiferous, tactile nature.
Small tufts of tactile hairs or papillae are sometimes observed in small number at the tip of the head; sometimes longer hairs, apparently rather stiff, are seen on the surface, very sparingly distributed between the cilia, and hitherto only in a very limited number of small specimens.
46) is atrophied, or whether, if present, it has the form of a pair of tactile palps or of minute chelae.
Coxal (maxillary) process, the apical segment tipped with a single movable or immovable claw; appendages of 3rd pair different from the remainder, tactile in function, with at least the apical segment many-jointed and clawless.
Remaining pairs of appendages with their basal segments immovably fixed to the sternal surface, similar in form, the posterior three pairs furnished with two claws supported on long stalks; the basal segments of the 6th pair bearing five pairs of tactile sensory organs or malleoli.
It is regarded as a modified zooecium, the polypide of which has become vestigial, although it is commonly represented by a sense-organ, bearing tactile hairs, situated on what may be termed the palate.
I cannot separate touching from my tactile organs, seeing from my eyes, or hearing from my ears.
Having thus begun by touch and tactile inference, we confirm and extend our inferences of bodies in Nature by using the rest of the senses.
Finally, as touch perceives reciprocal pressure within, and tactile inference infers it without, touch is the primary evidence of the senses which is the foundation and logical ground of our belief in Nature as a system of pressing bodies.
In addition to the eyes and the olfactory circle on the head scattered tactile papillae are found on the ectoderm.
From an evidential point of view the apparition is the most valuable class of death-warning, inasmuch as recognition is more difficult in the case of an auditory hallucination, even where it takes the form of spoken words; moreover, auditory hallucinations coinciding with deaths may be mere knocks, ringing of bells, &c.; tactile hallucinations are still more difficult of recognition; and the hallucinations of smell which are sometimes found as death-warnings rarely have anything to associate them specially with the dead person.
When specialized as bearers of sensory (olfactory or tactile) organs, the rami are generally elongated, many-jointed and flagelliform.
The captacula are tactile and prehensile and can be protruded from the anterior aperture of the mantle.
The only other sense-organs are the captacula, which are tactile and olfactory.
Namely the Amblypygi of which Phrynus is a commonly cited type, these tactile appendages are exceedingly long and lashlike, whereas in the tailed division, the Uropygi, of which Thelyphonus is best known, the limb is much shorter and less modified.
Thelyphonus and its allies, however, have a long tactile caudal flagellum, the homologue of the scorpion's sting; but its exact use is unknown.
The tentacles are organs which serve both for the tactile sense and for the capture of food.
Her enjoyment of music, however, is very genuine, for she has a tactile recognition of sound when the waves of air beat against her.