FIELD BOOK OF INSECTS. 



with variable tints of pearl. The wing covers, the parts 

 which exhibit a change of color, are lined beneath with an 

 orange colored paint, which seems to be filled with little 

 vessels ; and these are probably the source of the changeable 

 brilliancy of the insect." Freshly emerged adults are dull 

 orange and have three black dots on each elytron but, 

 as the golden color is assumed, these spots disappear. 

 After death, the elytra become dull reddish-yellow. Thanks 

 to Mr. Leng, who sifted several hibernating adults from the 

 fallen leaves in his garden just as the publishers were 

 calling for "copy, " I am able to give a figure colored from 

 life the only one which has been published, as far as I 

 know. The under surface and last four joints of the 

 antennae are black; the flat margins of the pronotum and 

 elytra are very thin and translucent. The egg has three 

 spiny prongs; the larva's "pack" is trilobed in outline; the 

 pupa is hidden by the larval pack and has three dark 

 stripes on the pronotum, with similar markings over the 

 abdomen. The following two have dark markings on the 

 elytra. In C. clavata the disk of the elytra is quite rough 

 from the numerous tubercles or elevations; base of prono- 

 tum and the elytra, except for the apices and the middle 

 of the side margins, brown; under surface pale yellow; 

 length, .3 in. The disk of the elytra of C. signifera is 

 smooth; dull yellow; base of pronotum usually with a 

 large, black spot, enclosing two pale ones; disk of elytra 

 and shoulders black with irregular, yellow spots; length, 

 not over .25 in. "The larva is a pale straw-yellow color 

 during the first four stages when it carries excrement on 

 the faeci-fork in a peculiar branched shape much like that 

 of the black-legged tortoise-beetle larva, but after the 

 last moult the color changes to a pea green, and all the ex- 

 crement is removed from the faeci-fork, which makes the 

 larva very difficult to recognize on a green leaf. In as 

 much as the larva does not feed and remains entirely 

 motionless during this last stage, this change of color is 

 very evidently of protective value. The pupa is also a 

 bright green, marked only by a ring around each of the 

 first pair of abdominal spiracles" (Sanderson). The 

 discal space on the elytra of C. plicata is shiny black, 

 without spots. 



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