22 INSECTS INJURIOUS TO GARDEN AND ORCHARD CROPS. 



The life history of this species, as determined by observations of the 

 past summer, is presented herewith. 



THE EGG AND OV1POSITION. 



The egg (fig. 3). — The egg is shining and dark coppery or bronzy 

 brown in appearance, being whitish when first laid, but soon changing 

 to light yellowish-brown, and just before hatching to dark bronze. It 

 is flattened on three sides; viewed from either end (b) it is triangular, 

 while the base or side of attachment (a) is strongly concave, rounded 

 at its sides and narrowed at each end, near the middle being provided 

 with a nipple, the evident point of attachment. The surface is appar- 

 ently nearly smooth, but when magnified is seen to be reticulated, being 

 composed of a network of minute and very regular hexagonal areas (c), 



,..- The length is nearly a half greater than the width, 



00qQ qq\. ana tne greatest depth is about the same as the 



XtPJAWfft^ width. Length, 1.55 mm ; width, 1.05 to 1.10 1 "" 1 . 



\0~Q9yy . ~/ Oviposition. — Eggs are deposited in more or 



l\^Ay / less regular rows, with a tendency toward the 



\^J l\&%& : : alternate regularity of checkers laid on the black 



£ vM^-^ d or white spaces, as in the case of the large mass 



fig. 3. -Egg of Anasa tristis.- figured at d, but sometimes they are disposed 



of^chlent^nrom^ide* mucli less regularly and may be closely crowded 



showing place of escape of together, as in the small mass also figured at d 7 or 



nymph ; c sculpture of egg ; ^ be -^ wj ^ separated> Egg masseS 



d, egg cluster — a, o, about «/ ./ -a ^ l co 



five times natural size; a, are deposited usually on the lower surface of a 



one-fourth enlarged; e, great- lea £ but yery often alg0 Qn tbe upper sur face and 



on the stems. When laid on the under surface 

 between two veins the mass is apt to be compact. A mass before the 

 writer consisting of about twenty eggs occupies a space of but little less 

 than one-fourth of an inch square, while another mass of the same num- 

 ber requires a space nearly 1| inches square. Normal oviposition is in 

 rather large masses of from twenty to forty, or more, but small masses 

 and even eggs laid singly are often found. 



The nymph makes its escape by forcing a hole through one end of 

 the ag^ r as shown at b of figure 3. 



DIFFERENT STAGES OF THE NYMPH. 



First stage (fig. 4, a). — When newly hatched the larva is an attractive 

 little creature; the body is light green, with the legs, antennae, and 

 haustellum a beautiful rose color. The head and the anterior part of 

 the thorax is lighter rose and the eyes darker; in a few hours these 

 parts with the entire thorax turn black. The body is elongate sub- 

 ovate, the head subtriangular, rather bluntly pointed, the apex of the 

 abdomen a little more acute. The antenna? and legs are snbequal and 

 of nearly the same length as the entire body. The four joints of the 



