SCALE-INSECTS. 105 
white ovisac, longitudinally corrugated; ovisae often much 
longer than the insect, and becoming filled with oval red eggs. 
Length of female, about fin., reaching sometimes nearly 4in. 
Body previous to gestation lying flat on the plant, the edge 
slightly turned up; on the dorsum a longitudinai raised ridge, 
forming one or more prominences. Insect covered all over with 
numerous minute fine hairs, most thickly on the thoracic region ; 
round the edge these hairs are longer, and are arranged in tufts 
somewhat closely set; the tufts are black, and contain from 
twenty to thirty hairs in each. Amongst the hairs in the tufts 
are several protruding tubular spinnerets, having on the outer 
end a kind of multiglobular ring or crown ; from these proceed 
cylindrical, glassy, straight tubes as long as the tufts of hair. 
Long, fine, glassy, delicate filaments, as long as the body of the 
insect, radiate from the edge all round; but these, being very 
fragile, are often irregular, or absen During gestation thick, 
short, cottony processes form at the edge of the thorax, seem- 
ingly attached to the feet. Antenne of eleven joints, very 
shghtly tapering ; each joint bearing hairs. Feet normal, some- 
what thick. Rostrum not long; mentum triarticulate. Pro- 
creation commencing soon after the first formation of the ovisac, 
the eggs being ejected into the sac as it grows; ovisac at com- 
pletion containing sometimes as many as 350 eggs; ovisac 
convex above, sometimes irregularly split, more often nearly 
conical, divided by several regular longitudinal grooves or ribs. 
Female of second stage dark-red, elongated, slightly convex, 
active, covered with thin meal, or short curly cotton. Body 
hairy with marginal tufts and spinnerets, as in adult. Anal 
tubercles inconspicuous, but the abdomen exhibits three small 
lobes on each side, from which spring six short sete. Antenne 
of nine nearly equal joints, hairy. Feet normal, thick. Several 
radiating, fine cottony filaments. Length of insect variable, 
from ;5in. to din. The dorsum exhibits the longitudinal raised 
ridge, but less conspicuously than in the adult. 
Young larva, about sin. long, dark-red, elongated, flattish, 
active; covered with yellow cottony down. Antenne of six 
joints, hairy; the last jomt is much the largest, clavate, 
apparently four-ringed, bearing four long hairs. Feet slender ; 
d?gitules short, fine hairs. Eyes prominent, tubercular. Men- 
tum biarticulate. Anal tubercles represented by three small 
processes at each side of the abdominal extremity, each process 
