24 
Seventh generation, mature female.—After having cast the last skin 
they measure but slightly over 1"™ in length. They are broadly pyri- 
form, highly convex above and quite flat beneath, surrounded with a 
rather broad and deep dorso-lateral depression. They are polished, 
of a deep black or purplish black color, and without a trace ot secre- 
tion of any kind, and, when seen on the leaves, remind one strongly 
of certain small Coeccinellids, such as Pentilia, and also of some of the 
Oribatid mites. All of the secretory tubercles have now completely 
disappeared. The head is arcuate in front and bears two to four 
small hairs. Eyes small, each composed of three ocelli. The rostrum 
is highly developed and reaches almost to the median coxe. The 
antennee are much longer than in the last larva stage, and about as 
long as the posterior tibiz and tarsi combined; the two basal joints, 
as usual, are stoutest, shortest, obeconic, subequal in length, and pro- 
vided with a short bristle near the inner apical angle; the third joint 
is very long and slender, of uniform diameter, rather densely and 
sharply serrated or annulated, provided with the usual sensorial 
thumb and two or three short hairs at the apex. The legs are long 
and stout, and bear the usual bristles on the tibize and tarsi; the 
digitules are well developed and capitate, the lower pair being much 
shorter and but slightly longer than the claws. The posterior tibize 
are stouter than the others, and are provided with a considerable 
number of sensorial pores or tubercles. The tail is small, trans- 
versely oval or knob-like, and bears six bristles; the terminal segment 
is bilobed, each lobe bearing three to four bristles. Each female con- 
tains from five to ten eggs, which, shortly after copulation, are deposited 
around the base of the leaf buds for next year’s brood. 
Seventh generation, male.—On account of the very small size of the 
male and its general similarity to female larve I failed to ascertain 
through how many transformations it passes, though they are evi- 
dently the same as those of the female. The mature male measures 
0.4 to 0.6" in length, and about one-half or less the size of the 
female. It is of the same black or purplish-black color and of an 
elongated pyriform shape, being broadest about the middle of the 
thorax and gradually tapering toward the end of the body; the front 
of the head is rounded and bears two small hairs. Surface of body 
densely reticulated. Secretory tubercles are wanting. The antennee 
are considerably longer and more slender than in the female; the two 
basal joints are subequal in length; the first joint is stoutest and 
about as long as broad, stoutest near the truncated apex; the second 
joint is clavate and more elongated; both bear bristles at the inner 
side near the apex. The third joint is very. long, slender, and of equal 
diameter up to the terminal thumb, slightly curved inward, profusely 
serrate or sealy and bears along its external edge from ten to fifteen 
or more minute and colorless sensorial thumbs and three small hairs 
at the apex. Eyes composed of three ocelli. The rostrum is highly 
