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The posterior of the three principal divisions of the brain, including the epencephalon and metencephalon. Sometimes restricted to the epencephalon only.

Same as Hydrocephaloid.

The siphon of Cephalopoda. See Cephalopoda.

See Thalamencephalon.

A nonmetallic element, of the halogen group, occurring always in combination, as in the iodides. When isolated it is in the form of dark gray metallic scales, resembling plumbago, soft but brittle, and emitting a chlorinelike odor. Symbol I. Atomic weight 126.5. If heated, iodine volatilizes in beautiful violet vapors.…

(Zoöl.) An antelope (Cerphalopus pygmæus), found in South Africa. It is of very small size, being but one foot high at shoulder. It is remarkable for its activity, and for its mild and timid disposition. Called also guevi, and pygmy antelope.

A genus of cephalopods, including numerous species of squids, common on the coasts of America and Europe. They are much used for fish bait.

A bird of Celebes (megacephalon maleo), allied to the brush turkey. It makes mounds in which to lay its eggs.

Of or pertaining to the mesencephalon or midbrain.

The cavity of the mesencephalon; the iter.

f very lowly organized, wormlike parasites, including the Dicyemata. They are found in cephalopods. See Dicyemata.

ee Helianthin. -- Methyl violet (Chem.), an artificial dye, consisting of certain methyl halogen derivatives of rosaniline.

The middle segment of the brain; the mesencephalon. See Brain.

One of the grand divisions of the animal kingdom, including the classes Cephalopoda, Gastropoda, PteropodaScaphopoda, and Lamellibranchiata, or Conchifera. These animals have an unsegmented bilateral body, with most of the organs and parts paired, but not repeated longitudinally. Most of them develop a mantle, which in…

sugar, isomeric with sucrose and obtained from certain lichens and fungi. Called also trehalose. [Written also mykose.]

Of or pertaining to the myelencephalon; cerebro-spinal.

The only existing genus of tetrabranchiate cephalopods. About four species are found living in the tropical Pacific, but many other species are found fossil. The shell is spiral, symmetrical, and chambered, or divided into several cavities by simple curved partitions, which are traversed and connected together by a con…

The brain and spinal cord; the cerebro-spinal axis; myelencephalon. B. G. Wilder.

ht around the heads of divinities, saints, and sovereigns, upon medals, pictures, etc.; a halo. See Aureola, and Glory, n., 5.

A suborder of Cephalopoda including Octopus, Argonauta, and allied genera, having eight arms around the head; -- called also Octopoda.