586 HEMER 
deemed paralitica! plants. Each of them is fupported_ 
upon a long pedicle, refembling the (talk of a plant, ot 
which the egg appeared to be the flower. In this form 
they are feen in clutters upon the leaves of the lime-tree 
in particular, where, as foon as they are hatched, they 
find fubfiftence among the furrounding plant-lice. In 
about fifteen days, the larva attains to its full growth, 
when it weaves to itfelf a fmall white filken cod of a 
clofe texture: there the hemerobius lodges about three 
weeks, till its metamorphofis -into a winged animal is 
completed : if, however, the cod has not been fpun till 
autumn, it remains in it till, fpring, when it is tranf- 
formed. The flight of thefe infedts is flow and heavy ; 
fome of them have an excrementitious fmell. They 
are not, however, unfightly infedts. The fpecies are 
thirty-eight in number, in two divifions. 
1. Lip cylindrical, membranaceous, annulate, i. He¬ 
merobius pedtinicornis : antennas pectinate; wings white 
with brovrn marks and nerves fubarticulate with white. 
Inhabits South America. See this curious fpecies deli¬ 
neated in the Helvella Plate, at fig. 5. ' 
2. Hemerobius grifeus: wings grey, fpotted with 
white. Head and thorax ferruginous, varied with black: 
lower-wings black at the bafe. Inhabits Africa. 
3. Hemerobius atratus: wings whitifh; upper pair 
fpotted with black; body black. Head black, front 
covered with cinereous hair; thorax black, hairy, with 
a cinereous line each- fide; abdomen black with an 
oblong teftaceous fpot towards the tip. Inhabits Africa. 
4. Hemerobius pundtatus : brown; wings white, fpot¬ 
ted with brown, the nerves dotted with white and 
black. 
5. Hemerobius fufeatus: wings brown, fpotted with 
white; lower-ones black at the bafe. Head ferruginous; 
mouth black ; thorax dufky. Inhabits Eaft India. 
6. Hemerobius lutarius: black; wings ftriate, mi¬ 
nutely fpotted with white. Inhabits Europe. This is 
fliown in the Engraving at fig. 9. 
II. Lip horny, rounded at the tip, vaulted. 7. He- 
merobiu N s cornutus : mandibles projedting, horn-fliaped. 
Body ferruginous, eyes golden; very large. Inhabits 
North America. This magnificent fpecies is delineated 
in the Engraving at fig. 4. 
8. Hemerobius grandis: wings fubequal, reticulate 
with veins,' with two. yellowifh fpots. Body oblong, 
yellowifh ; antennas and jaws black. Inhabits Japan. 
9. Hemerobius perla, the fparkljng hemerobius. Spe¬ 
cific character; wings hyaline with green veins; body 
yellowifh green, eyes golden. This infedt is principally 
feen in the middle and towards the decline of fummer, 
and is a flender-bodied fly, of a grafs-green colour, 
with bright gold-colpured eyes, and four large tranfpa- 
rent oval wings finely reticulated with pale-green veins. 
The general length of the animal, from the head to the 
tips of the wings, is about three quarters of an inch. It 
is not uncommon in the neighbourhood of gardens, 
occaftonally flying into houfes. If prelfed or bruifed, 
it diffufes an odour of the mod difagreeable kind, and 
which remains a confiderable time on the fingers. The lar¬ 
va is‘of an oblong-oyal fhape with a pointed extremity ; it 
grows to the length of about three quarters of an inch, 
and is of a (Pattim or flightly-convex furface, and a 
reddifh colour: the abdominal divifions project in a 
ferrated manner on each fide the body, and the head is 
armed in front with a pair of fhort, curved, tubular, 
forceps, by which the animal feizes and fucks the juices 
of its prey. Thefe’larvae livealmoft entirely on aphides, 
which they devour with great avidity : their growth is 
pretty quick, and in the fpace of about a fortnight they 
are ready to undergo their change into the chry.fal.is 
date. In order to this, the animal draws a fine fi}k 
from the extremity of its body, and in a fliort fpace 
envelopes itfelf in a round ball, of the fize of a fmall 
pea, fixed to a leaf or twig of the tree it frequents, and, 
divefling itfelf of its fkin, commences a chryfalis, which 
in the lpace of about twenty days affords the complete 
O B XU S. 
infedt. I t is wonderful, as Reaumur very juftly obferves, 
that an infedt with fuch an expanfe of wing fliould be 
contained within the fmall compafs of the filken ball of 
the chryfalis. The complete infedt, like its larva, is of 
a predacious nature, living on the fmaller kind of flying 
infedts. This beautiful fpecies is reprefented in the 
Engraving at fig. 6. 
10. Hemerobius filofus: wings whitifli; body cine¬ 
reous; antennae very long. Inhabits Otaheite. , 
11. Hemerobius albus: wings hyaline; body white ; 
eyesbrafly. Inhabits Europe. 
12. Hemerobius capitatus: wings white with reti¬ 
culate nerves ; body brown ; head and fore-part of the 
thorax teftaceous. Wings with a green fliade, and a 
common elongated brown fpot. Inhabits Germany. 
13. Hemerobius chiyfops : wings hyaline with green 
veins and brown fpots; body variegated black and 
green; Head teftaceous; wings fringed on the outer 
margin. Inhabits Europe. 
14. Hemerobius maculatus : wings white, upper pair 
fpotted with black; body black; head and legs fub- 
teftaceous. Inhabits France. 
15. Hemerobius phalaenoides: wings mucronate at 
the bafe, and cut or notched behind : body teftaceous. 
Wings teftaceous with an oblique brown ftreak and dot. 
This Angular fpecies is delineated in the Engraving at 
fig. 10. Inhabits Europe. 
16. Hemerobius nitidulus : wings ftriate, cinereous ; 
body teftaceous; legs pale. Antennas brown; eyes 
black. Inhabits Germany. 
17. Hemerobius hirtus: wings hairy, reticulate with 
brown; lower ones with a terminal band. Inhabits 
Europe. 
18. Hemerobius fufeatus: wings ftriate, brown-hya¬ 
line; body black ; legs teftaceous. Inhabits Denmark 
and France. 
19. Hemerobius lutefeens : wings light brownifh with 
ftreaks; body yellowifh : Ihown in the Engraving at 
fig. 8. 
20. Hemerobius humuli: wings white with fcattered 
brown dots: antennaj annulate with white, and black. 
Inhabits near Upfal, in hop-plantations. 
21. Hemerobius longicornis : black, mouth and legs 
pale ; antennas long, brown. All the wings white with 
brown nerves and a brown marginal dot. Inhabits 
Holface. 
22. Hemerobius ftriatulus : wings ftriate with brown ; 
lower ones immaculate ; body brown and yellow. Head 
yellow; mouth and eyes brown ; thorax brown; bread 
and legs yellow ; abdomen brown, yellowifh at the Tides. 
Inhabits Europe. 
23. Hemerobius odto-pundtatus : wings white ; each 
with two brown dots. Inhabits Cochin-china. 
24. Hemerobius fafeiatus: wings white with three 
black bands and numerous fpecks. Antennae black j 
head and thorax yellow with brown marks; abdomeh 
black; lower-wings white immaculate. Inhabits Kiel. 
25. Hemerobius variegatus : wings white With black 
fpots, the nerves dotted ; body brown : antennse and 
legs pale. Inhabits France. 
26. Hemerobius nervofus: wings variegated, the 
nerves dotted with white ; body brown ; crcwn and 
back of the thorax yellowifh. Antennae yellowifh annu¬ 
late with black ; legs yellowifh. Inhabits France. 
27. Hemerobius fex-pundtatus; wings white with 
brown fpots and fix diftindt dots behind; antennae 
brown. Inhabits Europe. 
28. Hemerobius picicornis : upper-wings .varied with 
white and brown; body black; antennae long, hairy. 
Lower wings hyaline immaculate ; legs pale. Inhabits 
Denmark : fmall. 
29. Hemerobius flavicans : black ; thorax and abdo¬ 
men yellow. Inhabits Europe. 
30. Hemerobius bipundtatus : wings with two black 
dots: body varied with brown and yellow. Inhabits 
Europe. 
31. Hemerobius 
