CHRYS0MELID.1<:. 



500 



toil or twelve days afterwards, wliile the third brood of beetles 

 stays under ground all winter, and only emerges late in the 

 following spring, just 

 in time to lay its eggs 

 upon the young po- 

 tato leaves," which it 

 devours to such an ex- 

 tent as to sometimes 

 almost cut off the en. 

 tire crop in certain lo- 

 calities. The Editors 

 of the ' ' American En- 

 tomologist," from whom we have quoted, enumerate and 

 figure various beetles, hemiptcra, and a species of Tachina fly 

 (Lydella doryphorjB Riley) which mostly prej^ upon the larva'. 

 Dr. H. Shimer shows, in the "American Naturalist," vol. iii, 

 p. 91, that a dry and hot summer is very unfavorable to the 

 development of this insect, the pupgs dying for want of suffi- 

 cient moisture in the soil. The best remedy against its attacks 

 is hand picking. 



A very closely allied species or variety, the D. jnncta Ger- 

 mar (Fig, 506'), may be easil}'- confounded Avith the other spe- 

 cies, but differs, according to Walsh, in the head 

 of the larva being paler, while in the beetle the third 

 and fourth stripe from the outside are united, where 

 they are distinct in the D. 10-lineata, and the logs 

 are entirely pale yellow, with a dai'k spot on the 

 femora. It feeds on the wild potato, not eating '^'^s- 506-. 

 the cultivated species, and has alwa3^s been an inhabitant of the 

 Western and Southern States. 



Chrysomela is an oval oblong genus, and its ally, Calligrapha^ 

 is very convex, hemispherical ; the species are gaily spotted and 

 banded ; CalUgraplia scalaris Lee. is abundant on the alder. 

 The larvffi (Fig. 506^, larva of C. Philadelphica Linn.) arc 

 thick and fleshy, with a row of black spiracles along tlie side 

 of the bod}'', and a dark prothoracic shield. 



Eumolpus auratus Fabr. is a shining, rich golden green bee- 

 tle, found on the dog's-bane. 



Chlamys is a little oblong, cubical, roughly shagreencd, 



