as the fbrn'iCi-j but of a frnaller fize, and therefore 
called by fonie naturaliils glaucidium. This fifh 
has an undulated line running on each fide from 
the membrane of the gills to the middle of the 
bodyj from whence it is continued ftraight to the 
tail; whereasj in the common GlaucuSj this line 
prelerves one unvarying direftion. 
The third fpecies differs from the other tv/o in 
having very firong and fliarp teeth, and in the 
lateral line being much more v/aved: above this 
line the fiili is of a cicep blueifh black colour; 
and, below it, perfc6lly white. 
GLEAD. A provincial appellation for the 
milvus, or kite. 
GLINUS. A name by which Belonius, and 
fome other writers, have called the fmall fea-fifli 
more generally known by that of dracunculus. 
GLTS. in a limited fcnfe, this word only fig- 
nifies the dormoufe ; but, according to the accep- 
tation of Linn£EUS, the Glires conflitute the fourth 
order of the mammalia clafs of animals. The 
characrers of the creatures belonging to this clafs 
are the follov/ing : they have only two fore-teeth in 
each jaw; they are deftitute of the dentes canini, or 
dog-teeth; and the feet have toes, and are formed 
for leaping. Animals of this clafs comprehend 
the feveral fpecies of the porcupine, the hare, the 
fquirrel, the beaver, the moufe, and the bat. 
' GLIS VOLANS, the Flying Dormoufe. The 
name of an animal properly of the vefpertilio or 
bat kind; diftinguifhed by Linnsus under the ap- 
pellation of the fpafma, or vefpertilio ecaudatus, 
nafo foliato obcordato. 
GLISSA. A fea-fifli of the tunny kind; but 
it's flvin is perfe£lly fmooth, and free from fcales : 
it ufually grows to the length of two cubits, and 
the thicknefs of a man's body; it is of a roundifh 
figure; the jaws are very rough, but deftitute of 
teeth; and the tail is forked, but lefs arched or 
iunated than that of the tunny. This fiili is found 
in deep v/ater, at a confiderable diflance from 
ihore; and it's flefh is efteemed very delicate food. 
GLOBE ANIMALCULE. This very fin- 
gular, minute, aquatic animal, whofe fhape feems 
to be exa£lly globular, without either head, tail, or 
{ins, was firft difcovered by the ingenious Baker, 
in his microfcopical experiments. It m,oves in all 
dire6i:ions, either rolling like a bowl, or gliding 
along fmoothly without any convolutions. It's 
whole body is tranfparent, except where it is co- 
vered with circular black fpots, which in different 
animalcules are found differing in their numbers; 
and thefe fpots are probably either the eggs or the 
young. The general appearance of the body of 
this infeft exhibits a kind of fiiort moveable hairs 
or briftles, by means of which it is extrem-cly pro- 
bable that it's motions are performed. 
GLOBE-FISH. The name by which fome 
fpecies of the oilracion are diftinguiibed. See 
OSTRACION. 
GLOBOSiE CONCHiE. A family of Ms, 
more generally called tuns: the charadters of which 
are; that their bodies are greatly fwelled or 
rounded, from which circumftance they acquire 
the name of Globofas, or tuns; that they have 
ihort turbans ; that their mouth.s are extremely pa- 
tulous ; and that they are deflitute of pillar or co- 
lumella lips. The fhells which belong to this fa- 
mily are the tuns, partridges, figs, harps, Ferfian 
crowns, and melons. 
GLOTTIS. A name given by many natu- 
ralifts to a bird of the long-legged kind approach- 
G L O 
ing to the figure of the red-fhank, but larger and 
longer legged, and generally known by the appel- 
lation of limola, 
GLOW-WORM. A genus of infers of the 
order of coleoptera; the antenns of which are fe- 
taceous; the jaws are prominent, and dentated; 
the eyes are flightly prominent; and the thorax is 
of a roUndifh, marginated figure. 
The terms Cantharis and Cicindela have been 
indifcriminately applied to the Glow- Worm; but, 
in fa£t, they form two diftinft genera of the fame 
order, comprehending feveral fpecies in the Lin- 
njEan fyftem. The cantharis has fetaceous an- 
tennsE ; the thorax is marginated, and fliorter than 
the head; the exterior wings are flexile; and the 
fides of the abdomen are plicated and papillofe. 
In moft fpecies, the thorax is depreffed; but, in 
fome, it is roundifh. Linnsus enumerates twenty- 
fix fpecies of this genus. 
The fame author reckons fourteen fpecies of 
the cicindela, diftinguifhed by their colours and 
the fpots on their exterior v/ings : thus, the field, 
or green Glow- Worm, has five white fpots on it's 
exterior wings; the black Glow-Wonn, which 
frequents woody places, has two; the brafiy Glow- 
Worm, commonly found in moift places, has 
broad excavated fpots on the wings ; and the black 
Glow- Worm, with a round thorax, common in 
rocky places, has tv/o ferruginous fpots on thefe 
wings. 
No two infefts differ more from each other than, 
the male and female Glow-Worms. The male is 
furnifhed with wings, and is a fmall fly; whereas 
the female is deftitute of wings, and continues a 
large crawling Worm. The body of the male is 
oblong, and fbmewhat depreflTed; the wings are 
fliorter than the body; the head is broad, dun, and 
flat ; and the eyes are large and black : this infe£t 
is by no means luminous, and therefore is not ge- 
nerally fuppofed to have any affinity to the Glow- 
Worm. I'he female is what is exprefsly called 
by this name : this is a very flow-paced animal, 
without wings, and in it's general conformation 
fomewhat refembling a caterpillar; the head is 
fmall, flat, hard, black, and acuminated towards 
the m.outh; the antenns are fhort; the legs, which 
are fix in number, are moderately long; the body 
is flat, and compofed of twelve rings, whereas that 
of the male confifts only of five ; and the colour is 
dufky, with a ftreak of white running down the 
back. In the day-time it exhibits none of it's 
diftinguifhing qualities; but, in the night, it be- 
comes perfeftly confpicuous by the glowing light, 
or lambent flame, that is feen near it's tail, iffuing 
from the under-part of it's body. 
The common Giov/-Worm, which fo often pre- 
fents itfelf to our curiofity during the fummer 
months, if carefully taken up, may be kept alive 
many days on frefli turfs ; and will conftantly ex- 
hibit it's luminous appearance in the dark. 
The Glow- Worm is a fiuggifh, ina£live infect, 
having, to appearance, no figns of life in the day- 
time, when it's light is not perceptible, though 
carried into a darkened room, unlefs the creature 
is turned on it's back, and put into motion; and, 
even then, it is but vei-y faint: but, after fun-fet, 
the light begins to return, and with it the life and 
motion of the animal. Indeed, the motion and 
light of the Glow-Wonn feem mutually dependent 
on each other: it never fliines but when it's body 
is in fom.e degree of m.otion; and, when it is moft 
ftrongly iuminousj it's body is elongated a third 
more 
