40 
young larvee of this generation are at first pale yellowish, but as they 
grow in size become much darker. The head isdusky; antenne, legs, 
and rostrum darker, and the eyes black or purplish black. They are 
dusted with a mealy secretion, and soon acquire a short brush of white 
secretion along each side of the abdomen. They are about 0.6™™ in 
length, much elongated, and almost three times as long as broad, with 
the sides nearly parallel. The front of the head is almost straight 
and provided at the middle with a prominent, rounded tubercle. The 
posterior end of the body is rounded.» The antenne are four-jointed, 
rather stout, and slightly curved inward; joint two is slightly the 
shortest, the first stoutest; both bear a bristle near the apex; joints 
three and four are longer and subequal in length; the third is 
cylindrical and bears a small thumb near the apex; the last joint 
is slightly curved, tapering, and faintly annulated, bearing the 
usual thumb and several short, stiff bristles around the apex; they 
reach about as far back as the first coxee. The rostrum is stout and 
reaches beyond the median cox. The legs are long and stout, with 
the tarsi and claws highly developed. There is a rather long bristle 
near the end of the femora; two hairs or bristles near the end and 
one about the middle of the tibize, those of the posterior tibizw being 
much the longest; also one or two shorter ones on the tarsi. The 
tarsal digitules are very long and capitate; those of the claws appear 
to be wanting. The body is provided with four dorsal rows of small 
tubercles, each bearing a short and stout hair. Similar tubercles, and 
hairs are also present along the sides of the body and front of the head. 
Fifth generation; second stage.—In this stage they resemble still 
very much the young larve, though they measure now already 1™™ 
in length and are of a more elongate shape. They are, as before, 
covered with powdery secretion and provided with a lateral brush. 
The head is almost straight and has lost the frontal tubercle; the 
rostrum is shorter and reaches between the anterior and median 
coxe. The antenne are now five-jointed, very stout and distinetly 
eurved inward. The two basal joints are short, each bearing a bristle 
near the apex; the third and fourth are nearly subequal, with the 
third somewhat the longest; the fifth is longest of all, curved and 
tapering, bearing a number of spine-like hairs around the apex. The 
last two joints bear the usual thuinbs. All the tarsi, claws, and digi- 
tules are present. The hairs of the body and head are now much 
longer and stouter than in the first stage. 
Fifth generation; third stage.—In this stage they resemble still those 
of the second, though they are larger and measure about 1.2 to 1.4™™ 
inlength. The future wing-pads are now indicated by rounded swell- 
ings at the sides of the meso- and metathoracic segments. Tarsi and 
claws present, as before. The antennz are now about one-fourth 
longer than in the second stage, the third and fourth joints being sub- 
equal and longer than the others; in other respects they are as before. 
Fifth generation; fourth or pupa stage.—The fully developed pupe 
