434 ARTICULATES I INSECTS. 



and irregular holes through them. Soon they begin to 

 lay their oblong-oval and golden-yellow eggs, gluing them 

 to the leaves in groups of six or eight. Their filthy grubs 

 are hatched in about a fortnight, and after feeding upon 

 the potato leaves for about fifteen days, enter the ground, 

 pass into the pupa state, remain two weeks, and then come 

 forth perfect beetles, which lay eggs for a new brood. 

 Fig 329. The Genus Galeruca contains the Squash or Cu- 

 cumber Beetle, G. vittata, Fabr., less than one fifth 

 of an inch long, light yellow, with a black head 

 and three black longitudinal stripes ; black below. 

 ' Ue< The Genus Chrysomela is very gayly colored. 

 Fig. 33 o. The Ladder Chrysomela, C. scalaris, LeC, is 



about three tenths of an inch long, the head, 

 thorax, and under part of the body dark green ; 

 wing-covers silvery-white, with green spots on 

 the sides, and a broad green jagged stripe along 

 their inner edges ; antennae and legs red. 

 The Blue-winged Chrysomela, C. cceruleipennis, Say, is 

 about one seventh of an inch long. 



The Gilded Eumolpus, E. auratus, Fabr., is golden 

 green, and about three eighths of an inch long. 



The Genus Cassida contains the Tortoise* Beetles, which 

 are broad, oval, or rounded, nearly flat, and with the tho- 

 rax projecting over the head. 



The Genus Hispa contains little Leaf-Beetles, which are 

 rough above, and whose larvae burrow under the skin of 

 the leaves of plants, especially of the apple and its allies. 

 The Genus Haltica embraces the Flea-Beetles, little 

 shiny black leaping species, which injure leaves. 



COCCINELLID^E, Latr., OR LADY-BUG FAMILY. This 

 Fig 331 Family comprises hemispherical beetles, which 

 are black, red, or yellow, with round or lunate 

 spots. Both in the perfect and larva state 

 Ladyiug, they devour plant-lice. When about to become 

 chrysalids, they attach themselves to a leaf. 



