1924 ] 
Notes on Piesma cinerea Say 
231 
The First Instar Nymph. 
Length .74 mm; width .35 mm. Color light yellow, eyes 
red, antennae apically and tip of the beak somewhat brownish; 
body subdepressed, the sides nearly parallel; head nearly as 
long as wide, the protuberances before the eyes scarcely devel- 
oped; antennae as long as the head and prothorax together; eyes 
moderately prominent; beak reaches the middle coxae; posterior 
edge of the prothorax not wider than the anterior; abdomen but 
little wider than the prothorax, the edges somewhat flattened; 
head and thorax finely and sparsely punctured. 
The Second Instar Nymph. 
Length .87 mm; width .53 mm. Color uniformly light yel- 
low with a faint tinge of green; head a little wider than long, the 
protuberances before the eyes faintty developed; antennae as 
long as the head and prothorax; thorax wider than the head, the 
posterior edge somewhat wider than the anterior; abdomen 
widest at the second segment, a little wider than the thorax, 
the edges flattened; head and prothorax sparsely punctate. 
The Third Instar Nym,ph. 
Length 1.16 mm; width .66 mm. Uniformly light yellow 
with a tinge of green, paler at the margins; head wider than 
long, the protuberances before the eyes bluntly developed; 
thorax wider than the head, the wing pads nearly attaining the 
anterior edge of the third abdominal segment; prothorax two 
and a half times as wide as long; antennae minutely ciliate 
apically. 
The Fourth Instar Nymph. 
Length 1.75 mm; width .91 mm. Light yellow with a 
decided tinge of green; head wider than long, the protuberances 
before the eyes well developed; antennae nearl}^ the length of 
the head and prothorax, ciliate apically; prothorax nearly twice 
