62 Psyche [June 
Fourth Stage Nymph: Length 1 mm., greatest width 0.51 mm. 
Color similar to that of preceding stage. Shape oval; truncate 
and sinuate at middle of front; outer angles of head broadly 
rounded. Division between head and thorax indicated by slight 
indentation at lateral margin. Thorax gradually widening to 
posterior portion where it is broadly rounded. Dorsal surface of 
head and thorax covered with a shield like expansion. Wing-pads 
visible and extending to posterior margin of thoracic expansion. 
Abdomen narrow at anterior margin, broadening to anterior 
fourth; remaining portion broadly rounded so that abdomen is 
almost circular in outline. A fringe of minute spines on lateral 
margins of head and thorax. Several spines on lateral margin of 
each abdominal segment. Eyes dark brown. Antenne broadest 
at base, gradually tapering to tip which is slightly truncate. An- 
tenn more or less transversely ridged. Apical segment is one and 
one-half times the length of the basal segment. ‘Tip of apical 
segment bears two spines. Legs three jointed, somewhat curved. 
The two basal segments are subequal in width, surface of second 
segment slightly convex, third segment slightly convex and taper- 
ing to tip which bears a pair of minute hooks. Legs bear a few 
minute scattered hairs. Basal sheath of rostrum extending to 
bases of second pair of legs. 
Fifth Stage Nymph: Length 1.7 mm., greatest width 1 mm. 
General shape oval. Dorsal shield like expansion of head and 
thorax more pronounced. Head truncate in front, slightly convex, 
lateral margins broadly rounded. Front and anterior dorsal 
portion of head bearing a number of minute spines resting on mi- 
nute tuberculate bases. Lateral expanded margins of thorax 
abruptly rounded from sides of head. Sides of thorax moderately 
convex extending to posterior margin of second abdominal segment. 
Wing-pads extending to posterior margin of shield like expansion. 
Lateral margin of prothorax bears a row of minute spines each 
resting on a minute tuberculate base; a few scattered minute spines 
on dorsal surface near margin especially in the anterior region. 
Sides of abdomen are convex making it broadly oval in outline. 
Abdominal segments well defined, lateral margins of each bearing 
a number of minute spines resting on minute tuberculate bases. 
A number of very minute spines on dorsal surface near margins. 
Eyes prominent, lateral, covered by dorsal expansion of head. 
