dalt 
about the middle of April, generally about a week or so in advance 
of the appearance of the young leaves, during which time they con- 
gregate on the buds, on some of which I observed as many as 24 larve. 
Many of them doubtless perish before the leaves burst forth. They 
are of a dull black color, covered with a delicate film of a slightly 
bluish secretion. The eyes are dark purplish and the antenne and 
legs blackish. They are provided with short, stout, and truneate 
dorsal and lateral secretory tubercles or pores, of which there are 
about 18 to 20 on the upper surface of the head, 2 medio-dorsal groups 
of 6 to 8 on the prothorax, a group of 4 to 6 pores or tubercles each 
side of the median line of the meso- and metathorax, and 1 or 2 pores 
each side of the median line on the abdominal segments. There are 
also about 8 pairs of tubercles 
along the front margin of the 
head, half of them ventro-lat- 
eral, 5 or 6 each side of the tho- 
racic, and 2 each side of the ab- 
dominal segments, with an equal 
number on the ventral side near 
the lateral margin which, when 
the insect is living, can not be 
seen from above. From each of 
these pores or tubercles issues 
a rather stout and straight, or 
slightly curved, transparent and 
iridescent white and truncated 
waxy rod, which gives to the 
insect a rather bristly, though 
pretty, appearance. 
The dorsum is but slightly 
convex and surrounded with a yg. 2 Hormaphis hamamelidis: a, twig and 
groove-like depression near the bud with young larve in position; b, young 
; stem-mother; c, antenna; d, tarsus; e, ros- 
margin. The antenn are three- trum; f, waxy rod—much enlarged (original). 
jointed, with the third joint much 
the longest, which is rather more than twice the length of the two 
basal joints combined and about as long as the hind tibiw. It grows 
slightly stoutest toward the end and is indistinctly and irregularly 
annulated, bearing one or two short and colorless, movable, sensorial 
thumbs near the apex, and two or three short, stiff bristles at the tip. 
The legs are rather stout and long, and all the tarsi provided with 
four long and capitate digitules, of which the upper pair are longest. 
There are also two long and stout backward-curved bristles near the 
apex of the posterior tibize, one or two such bristles about the middle, 
externally, of the second joint of the hind tarsi, and a finer and straight 
bristle at the apical angle of the first joint. The rostrum is long and 
reaches beyond the base of the abdomen, the third joint being very 
