COCCOSTEUS (Gr. kokkos, berry; osteon, bone).  A genus of Ganoid Fishes.

COCHLIODUS (Gr. kochlion, a snail-shell; odous, tooth).  A genus of Cestraciont Fishes.

COELENTERATA (Gr. koilos, hollow; enteron, the bowel).  The sub-kingdom which comprises the Hydrozoa and Actinozoa.  Proposed by Frey and Leuckhart in place of the old term Radiata, which included other animals as well.

COLEOPTERA (Gr. koleos, a sheath; pteron, wing).  The order of Insects (Beetles) in which the anterior pair of wings are hardened, and serve as protective cases for the posterior pair of membranous wings.

COLOSSOCHELYS (Gr. kolossos, a gigantic statue; chelus, a tortoise).  A huge extinct Land-tortoise.

COMATULA (Gr. koma, the hair).  The Feather-star, so called in allusion to its tress-like arms.

CONDYLE (Gr. kondulos, a knuckle).  The surface by which one bone articulates with another.  Applied especially to the articular surface or surfaces by which the skull articulates with the vertebral column.

CONIFERAE (Lat. conus, a cone; fero, I carry).  The order of the Firs, Pines, and their allies, in which the fruit is generally a “cone” or “fir-apple.”

CONULARIA (Lat. conulus, a little-cone).  An extinct genus of Pteropods.

COPRALITES (Gr. kopros, dung; lithos, stone).  Properly applied to the fossilised excrements of animals; but often employed to designate phosphatic concretions which are not of this nature.

CORALLITE.  The corallum secreted by an Actinozooen which consists of a single polype; or the portion of a composite corallum which belongs to, and is secreted by, an individual polype.

CORALLUM (from the Latin for Red Coral).  The hard structures deposited in, or by the tissues of an Actinozooen,—­commonly called a “coral.”

CORIACEOUS (Lat. corium. hide).  Leathery.

CORYPHODON (Gr. korus, helmet; odous, tooth).  An extinct genus of Mammals, allied to the Tapirs.

CRANIUM (Gr. kranion, the skull).  The bony or cartilaginous case in which the brain is contained.

CRETACEOUS (Lat. creta, chalk).  The formation which in Europe contains white chalk as one of its most conspicuous members.

CRINOIDEA (Gr. krinon, a lily; eidos, form).  An order of Echinodermata, comprising forms which are usually stalked, and sometimes resemble lilies in shape.

CRIOCERAS (Gr. krios, a ram; keras, a horn).  A genus of Ammonitidoe.

CROCODILIA (Gr. krokodeilos, a crocodile).  An order of Reptiles.

CROSSOPTERYGIDAE. (Gr. krossotos, a fringe; pterux, a fin).  A sub-order of Ganoids in which the paired fins possess a central lobe.