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Any one of numerous species of echinoderms belonging to the class Asterioidea, in which the body is star-shaped and usually has five rays, though the number of rays varies from five to forty or more. The rays are often long, but are sometimes so short as to appear only as angles to the disklike body. Called also sea st…

A genus of large Jurassic dinosaurs remarkable for a powerful dermal armature of plates and spines.

An extensive group of echinoderms, comprising the starfishes and ophiurans.

That part of a pistil which has no epidermis, and is fitted to receive the pollen. It is usually the terminal portion, and is commonly somewhat glutinous or viscid. See Illust. of Stamen and of Flower.

ow both in the larger roots and crown, often doing great damage. (b) The crown borer (Tyloderma fragariæ), a small brown weevil whose larva burrows in the crown and kills the plant. -- Strawberry bush (Bot.), an American shrub (Euonymus Americanus), a kind of spindle tree having crimson pods and the seeds covered with…

Situated under the skin; hypodermic. -- Sub`cu*ta"ne*ous*ly, adv. Subcutaneous operation (Surg.), an operation performed without opening that part of the skin opposite to, or over, the internal section.

gdom, as, in zoölogy, the Vertebrata, Tunicata, Mollusca, Articulata, Molluscoidea, Echinodermata, Coelentera, and the Protozoa; in botany, the Phanerogamia, and the Cryptogamia.

See under Pump. -- Sucker tube (Zoöl.), one of the external ambulacral tubes of an echinoderm, -- usually terminated by a sucker and used for locomotion. Called also sucker foot. See Spatangoid.

A digging under; an undermining. [R.] Bp. Hall.

To overthrow, undermine, or force away, in order to get a substitute in place of. You never will supplant the received ideas of God. Landor.

slender, transparent holothurians which have delicate calcareous anchors attached to the dermal plates. See Illustration in Appendix.

The ectoderm of a sponge.

A small black dermestoid beetle (Attagenus piceus) whose larva feeds on tapestry, carpets, silk, fur, flour, and various other goods.

The outer integument of a seed; the episperm, or spermoderm.

ition of the ovum in which there are three primary germinal layers, or in which the blastoderm splits into three layers.

The three anterior ambulacra of echinoderms, collectively.

Zoöl.) Same as Tubipore. -- Tube foot (Zoöl.), one of the ambulacral suckers of an echinoderm. -- Tube plate, or Tube sheet (Steam Boilers), a flue plate. See under Flue. -- Tube pouch (Mil.), a pouch containing priming tubes. -- Tube spinner (Zoöl.), any one of various species of spiders that construct tubelike we…

The hypodermic injection of tuberculin, which has little or no effect with healthy cattle, but causes a marked rise in temperature in tuberculous animals.

ion, in a palate, disk, or membrane; as, the umbo in the integument of the larvæ of echinoderms or in the tympanic membrane of the ear.

urved outward at the tips. It also has a cervical plume consisting of a long, cylindrical dermal process covered with soft hairy feathers. Called also dragoon bird. -- Umbrella leaf (Bot.), an American perennial herb (Dyphylleia cymosa), having very large peltate and lobed radical leaves. -- Umbrella shell. (Zoöl.) S…