_gralloe_, stilts). The order of the long-legged
Wading Birds.
GRAPTOLITIDAE. (Gr. _grapho_, I write; _lithos_, stone). An extinct
sub-class of the _Hydrozoa_.
GYMNOSPERMS (Gr. _gumnos_, naked; _sperma_, seed). The Conifers
and Cycads, in which the seed is not protected within a seed-vessel.
HALITHERIUM (Gr. _hals_, sea; _therion_, beast). An extinct genus
of Sea-cows (_Sirenia_).
HAMITES (Lat. _hamus_, a hook). A genus of the _Ammonitidoe_.
HELIOPHYLLUM (Gr. _helios_, the sun; _phullon_, leaf). A genus
of Rugose Corals.
HELLADOTHERIUM (Gr. _Hellas_, Greece; _therion_, beast). An extinct
genus of Ungulate Mammals.
HEMIPTERA (Gr. _hemi_, and _pteron_, wing). An order of Insects
in which the anterior wings are sometimes "hemelytra."
HESPERORNIS (Gr. _Hesperos_, the evening star; _ornis_, bird).
An extinct genus of Birds.
HETEROCERCAL (Gr. _heteros_, diverse; _kerkos_, tail). Applied
to the tail of Fishes when it is unsymmetrical, or composed of
two unequal lobes.
HETEROPODA (Gr. _heteros_, diverse; _podes_, feet). An aberrant
group of the Gasteropods, in which the foot is modified so as
to form a swimming organ.
HIPPARION (Gr. _hipparion_, a little horse). An extinct genus
of _Equidoe_.
HIPPOPOTAMUS (Gr. _hippos_, horse; _potamos_, river). A genus
of Hoofed Quadrupeds--the "River-horses.
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