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arachnida

arachnida a·rach·ni·da (ə-rāk’nĭ-də)
n.
a cl-ss of arthropods that includes spiders, scorpions, mites, and ticks.
historical examples

contributions to the knowledge of the life history of arachnida.
the biotic -ssociations of c-ckroaches louis m. roth

on the contrary, this particular point is one in which they agree with the higher arachnida.
encyclopaedia britannica, 11th edition, volume 2, slice 3 various

in arachnida, myriapoda, and probably also insecta, the body cavity is primitively prolonged into the limbs.
the works of francis maitland balfour, volume ii (of 4) francis maitland balfour

all arachnida, including limulus, feed by suctorial action in essentially the same way as scorpio.
encyclopaedia britannica, 11th edition, volume 2, slice 3 various

even towards the nearer provinces of the myriopoda and arachnida i can find no bridge.
our common insects alpheus spring packard

formerly it was regarded as a crustacean; now it is cl-ssed by some authors with the arachnida, along with scorpions and spiders.
the sea-beach at ebb-tide augusta foote arnold

in defining the arachnida i shall only mention those particulars in which they differ from insect in their external anatomy.
an introduction to entomology: vol. iii (of 4) william kirby

these have small and insignificant rami, or none at all, a feature in which the arachnida differ from them.
encyclopaedia britannica, 11th edition, volume 2, slice 6 various

these, though somewhat connected with the rotifers, are considered to belong to a low division of the arachnida (spiders, &c.).
marvels of pond-life henry j. slack

the next type of form with regard to the oral organs is that of the arachnida.
an introduction to entomology: vol. iii (of 4) william kirby