210 



NEBRASKA STATE HORTICULTURAL SOCIETY. 



to the extreme edge of the transparent wing-covers. It is a very 

 variable species, and is frequently more or less speckled or mottled 

 with gold, while more rarely it has a uniform golden appearance. 





Fig. 21. — The Mottled Tortoise-beetle (Coptocycla guttata): a, larva; 

 b, pupa ; d, beetle — all enlarged. [After Riley.] 



"The larva is of a uniform greenish color, relieved by a bluish shade 

 along the back, when fully fed, but which fades away after the insect 

 has fasted for a few hours. It carries its dung in irregular broad 

 masses, often branching as in the species next to be described. The 

 pupa (Fig. 21, b) is also of a uniform green color, with a conspicuous 

 black ring around the base of the first abdominal pair of spiracles. 

 Before changing to pupa and previous to each moult, this larva is in 

 the habit of removing these dung from its fork." 



The last of these beetles which will be noticed in this connection is 



THE BLACK-LEGGED TORTOISE BEETLE. 

 {Cassida nigripes Oliv.) 



Fig. 22. — The Black-legged Tortoise Beetle (Cassida nigripes): 

 a, leaf with larvae ; b, larva cleaned ; c, pupa. [After Riley.] 



Fig. 23.— The Black-legged 

 Tortoise. Beetle (Cassida ni- 

 gripes). After Riley. 



This insect is figured herewith in its various stages of larva, pupa 

 and imago (Figs. 22 and 23.) In size this species slightly exceeds all 

 of those mentioned in the present paper. It also has the power, 

 when alive, of putting on a golden hue, but never is so brilliant as 

 the aurichalcea, than which it is much larger and has the black 



