468 [Assembly 
The proboscis (fig. 7), when uncoiled, is fully half as long as the 
antennae. 
The tibia (fig. 11), are furnished with spines or spurs on their 
inner sides, as in other geometridae ; the anterior pair having one 
only, which is inserted near the middle, and so incumbent and im¬ 
mersed among the scales as to be distinguished with difficulty. The 
intermediate tibiae have a pair of spurs at their apex ; whilst the 
posteriors have two pairs, one at the apex, and the other at about a 
third of the distance from these to the base. 
The Larva (figs. 3 and 4), when fully grown, is eight or nine- 
tenths of an inch in length, and slightly over one-tenth in diameter, 
of a cylindrical form, distinctly showing the thirteen segments of 
which it is composed. Its ground color is a light lively yellow, 
which forms a continuous line or stripe along the middle of the 
back, another stripe rather low down upon each side, and still an- . 
other below this. There is an irregular, white, cloud-like spot on 
each side of each segment, mostly between the dorsal and lateral 
yellow stripes, but prolonged downwards across the latter to the 
under side of the body. Numerous deep black spots and dots occupy 
each side of the body, which may be enumerated as follows : 1st. 
A regular row along each side of the yellow dorsal line, equidistant 
from each other, two being upon each segment, placed, with the 
corresponding ones opposite them, at the angles of an imaginary 
square. 2d. A smaller round spot on the anterior edge of each 
segment, slightly below those already described. 3d. Along the 
upper side of the lateral yellow stripe, a row of two spots on each 
segment, whereof the anterior one is large and the most conspicuous 
of any, and has a short black line immediately forward of it ; these 
two spots, with the two above them in the row first described, also 
form the angles of an imaginary square, within which the white 
cloud-like spot previously mentioned is chiefly situated. 4th. Close 
to the lower edge of each of the large spots just noticed, is a well- 
defined black dot, which is the spiracle or breathing-pore ; and 
slightly backwards and downwards from this is a round spot, nearly 
of the size of those in the rows first noticed. 5th. At the lower 
edge of the lateral yellow stripe, is a row of large, irregular shaped 
spots, two on each segment, somewhat confluent, forming as it were 
a black stripe. 6th. Below this stripe are four or more dots on 
each se gment, less regularly arranged and constant than those above, 
and leaving below them an immaculate light yellow ventral stripe. 
The head is white, the eyes, mouth, and a transverse spot above the 
upper lip, and also the three anterior pairs of feet, black. The 
