Li 
front edge of the head; about five or six each side of the thoracie 
segments, two each side of the abdominal segments, and seven or 
eight to ten on the last or eighth segment; from each of which issues 
a short, stout, truncated and cylindrical, glassy, transparent, and 
beautifully iridescent, waxy rod. There is also a series of similar 
though shorter rods along the middle of the back. The rostrum is 
stout and reaches to or between the posterior coxe. The antennz 
are rather long and slender, and about as long as the posterior tibia; . 
they are faintly serrate or annulated and slightly clavate, with a notch 
near the apex, containing a small, movable thumb; the tip is bluntly 
rounded and bears two or three small hairs. Legs rather long and 
stout; the posterior tibiz bear one or two rather long bristles and the 
tarsi a Similar one on its external edge. The upper pair of digitules 
are long, slender, and ecapi- 
tate; the lower pair is want- 
ing. 
Third generation, second 
stage.—After having cast their 
first skin the larvee measure 
about 0.4™" in length and 
have become proportionally 
broader. The antennze have 
become now very short, almost 
rudimentary, and composed 
of two, or sometimes three, 
more or less distinct joints, 
the last or last two joints, as 
the case may be, being about 
twice the length of the first, FiGc. 6.—Hormaphis hamamelidis: Third generation; 
: young larva, ventral view—much enlarged (origi- 
obliquely truncate at the na). 
apex, and bears a minute 
thumb at the inner apical angle. The tarsi of the anterior and 
median legs have been lost or they may sometimes be represented by a 
minute rounded stump. The tarsi of the posterior legs are deformed; 
their claws are lost or represented by a small spine-like process. The 
digitules are still present, though simple. The rostrum is stout and 
reaches to the meta-sternum. The number and arrangement of the 
secretory tubercules are about the same as in the first stage. 
Third generation, third stage (Fig. 7).—In the third stage they are 
broadly oval; the antennze have become still shorter, while the ros- 
trum reaches only between the median coxe. In other respects they 
are similar to the previous stage. 
Third generation, fourth or Aleurodiform stage (Fig. 8).—Toward 
the middle or end of June the insects cast their third or final skin and 
assume a most remarkable mimicry; in fact, mimic now so closely 
3504 Non oO? 
