GLOSSARY. 
575 
Genera, the plural of genus 
Generic character, the marks which 
are peculiar to a genus 
Geniculate, kneed 
Genus, the third division into which 
the animal kingdom is divided, or 
those into which an order is divided 
Gibbous, bulged or bulging 
Glabrous, smooth, having a smooth 
surface 
Glandular, pertaining to the glands, 
having the nature of glands 
Granulated, beaded, in small grains 
or beads 
Graduated, in regular progression, by 
succession of degrees 
Grinders, the teeth of quadrupeds, in¬ 
side of the canines 
Hallux, the hind toe of birds 
Haustellum, a trunk at the mouth of 
an insect 
Hemispherical, in the shape of a half 
globe 
Heteroclitical, synonymous with he¬ 
terostrophe 
Heterostrophe, reversed, applied to 
any thing of a form reversed from 
the ordinary forms of things 
Hirsute, rough, beset with strong hairs 
Hispid, hairy 
Hydrogen, inflammable gas 
Involute, where the exterior lip is 
turned inwards at the margin, as in 
the Cypraea 
Isabella-colour, a brownish yellow 
with a shade of brownish red 
Irides, the coloured circle of the eyes 
which surrounds the pupil 
Iridescent, shining, with changeable 
colours 
Jagged, denticulated,toothed like a saw 
Juncture, the joining of the whorls in 
univalve shells 
Keel, the longitudinal prominences in 
the genus Argonanta, and high 
ridges on the upper mandibles of birds 
Knob, a protuberance, any part raised 
bluntly above the rest 
Lactiferous, producing milk 
Lacerators,the canine teethare sooalled 
Lachrymal, of or belonging to tears 
Laciniate, jagged or cut into irregular 
segments 
Lacunose, having the surface covered 
with small pits 
Lacteals, vessels in the stomach that 
convey the chyle 
Lamellar, consisting of films or plates 
Lamellated, divided into distinct plates 
or foliations 
Imbricated, placed like the tiles of ; 
roof 
Imperforated, not pierced with a hoh 
Inarticulate, not jointed 
Incisive, cutting 
Incisors, the incisory teeth 
Incisory teeth, the four front cutting 
teeth in the upper and uuder jaws 
of quadrupeds 
Incumbent, one lying over the other 
Incubated,} bent imvards > crooked 
Indented, unequally marked, hollowed 
Inequilateral, with unequal sides, when 
the anterior and posterior sides make 
different angles with the hinge 
Inequivalve, where one valve is more 
convex or larger than the other 
Inflated, tumid and swollen as if blown 
out 
Iuflected, bent inwards 
Indexed, bent towards each other 
Inguinal, relating to the groin 
Intercostal, placed between the ribs 
Internode, the space between one knot 
or joint and another 
Interrupted, divided, separated 
Intestinal, belonging to the bowels 
Interstice, space between oue part 
and another, a crevice 
Intortion, the turning or twisting in 
any particular direction 
Involucre, a covering 
Laminae, thin plates, laid one coat 
above another 
Lanceolate, oblong, and gradually ta¬ 
pering like the liead of a lance 
Larva, a caterpillar, the state of an in¬ 
sect after it emerges from the egg 
Lateral, extending to the sides from 
the centre 
Latticed, having longitudinal lines or 
furrows, decussated by transverse 
ones 
Lenti eulate, doubly convex, of the form 
of a lens 
Ligament, a solid body, softer than a 
cartilage, but harder than a mem¬ 
brane, which fastens the bones and 
articulates them together for mo¬ 
tion ; in bivalve shells the substance 
which connects the valves 
Limb, the margin of bivalve shells 
Linear, composed of lines 
Lip, the outer edge of the aperture 
of bivalves 
Littoral, of or belonging to the shore 
Lobated, rounded at the edges 
Longitudinal, the length, lengthened 
Lubricity, slipperiness, smoothness of 
surface 
Lunated, formed like a half moon 
Lunulated, crescent shaped 
Lunule, a crescent-shaped mark, is- 
tuated near the anterior and poste¬ 
rior slopes of bivalve shells 
Luniform, form of a crescent 
