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Same as Cystidean.

Same as Cystidea.

The division of Cetacea which comprises the dolphins, porpoises, and related forms.

plates, and covered with movable spines. See Spatangoid, Clypeastroid. [Written also Echinidea, and Echinoida.]

A division of Annelida which includes the genus Echiurus and allies. They are often classed among the Gephyrea, and called the armed Gephyreans.

That order of the Crinoidea which includes most of the living and many fossil forms, having jointed arms around the margin of the oral disk; -- also called Brachiata and Articulata. See Illusts. under Comatula and Crinoidea.

Having the anterior scutes extending around the tarsus on the inner side; -- said of certain birds.

Same as Epiglottic.

An extinct order of Merostomata, of which the genus Eurypterus is the type. They are found only in Paleozoic rocks. [Written also Eurypterida.]

Having the anterior scute

A subclass of algæ including all the red or purplish seaweeds; the Rhodospermeæ of many authors; -- so called from the rosy or florid color of most of the species.

Of or pertaining to the glottis; glottal.

Of or pertaining to the islands called Hebrides, west of Scotland. -- n.

An order of Anthozoa; the Actinaria.

Having a single series of large scutes on the posterior side of the tarsus; -- said of certain birds.

One of the classes of echinoderms.

An extensive order of Hydrozoa or Acalephæ. [Written also Hydroida.]

Same as Hyoid, a.

An order of small hoofed mammals, comprising the single living genus Hyrax.

Consisting of jasper, or containing jasper; jaspery; jasperlike.