Webster
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Webster’s Revised Unabridged Dictionary · 1913

Limuloidea

Lim′u·loi′de·a (lĭm′ū·loi′dē·ȧ), n. pl. [NL. See Limulus, and -oid.] (Zoöl.) An order of Merostomata, including among living animals the genus Limulus, with various allied fossil genera, mostly of the Carboniferous period. Called also Xiphosura.

☞ There are six pairs of leglike organs, surrounding the mouth, most of which terminate in claws; those of the first pair (probably mandibles) are the smallest; the others have the basal joints thickened and spinose, to serve as jaws, while the terminal joints serve as legs. This group is intermediate, in some characteristics, between crustaceans and certain arachnids (scorpions), but the respiration is by means of lamellate gills borne upon the five posterior abdominal appendages, which are flat and united in pairs by their inner edges, and are protected by the lidlike anterior pair, which also bear the genital orifices.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.