crooked; _keras_, horn). A genus of
Tetrabranchiate Cephalopods.
CYSTIPHYLLUM (Gr. _kustis_, a bladder; _phullon_, a leaf). A genus
of Rugose Corals.
CYSTOIDEA (Gr. _kustis_, a bladder; _eidos_, form). The
"Globe-crinoids," an extinct order of _Echinodermata_.
DADOXYLON (Gr. _dadion_, a torch; _xulon_, wood). An extinct genus
of Coniferous trees.
DECAPODA (Gr. _deka_, ten; _podes_, feet). The division of
_Crustacea_ which have ten feet; also the family of Cuttle-fishes,
in which there are ten arms or cephalic processes.
DECIDUOUS (Lat. _decido_, I fall off). Applied to parts which
fall off or are shed during the life of the animal.
DEINOSAURIA (Gr. _deinos_, terrible; _saura_, lizard). An extinct
order of Reptiles.
DEINOTHERIUM (Gr. _deinos_, terrible; _therion_, beast). An extinct
genus of Proboscidean Mammals.
DENDROGRAPTUS (Gr. _dendron_, tree; _grapho_, I write). A genus
of Graptolites.
DESMIDIAE. Minute fresh-water plants, of a green colour, without
a siliceous epidermis.
DIATOMACEAE (Gr. _diatemno_, I sever). An order of minute plants
which are provided with siliceous envelopes.
DIBRANCHIATA (Gr. _dis_; twice; _bragchia_, gill). The order
of _Cephalopoda_ (comprising the Cuttle-fishes, &c.) in which
only two gills are present.
DICERAS (Gr. _dis_, twice; _keras_, horn). An extinct genus of
Bivalve Molluscs.
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