348 LEPIDOPTEEA. 



nearly full grown they cover the grains with a very thick web. 

 According to Curtis the larvae retire to cracks and crevices in 



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tli;- lloor and walls of the granary, and construct their cocoons 

 by gnawing the wood and working it up with their web until it 

 has the form and size of a grain of wheat, wherein it remains 

 through the winter, changing to a chrysalis early in the spring ; 

 while two or three weeks after the moth appears. It is creamy 

 white, with six brown spots on the costa, and with a long 

 brown fringe. To prevent its attacks empty granaries should 

 be thoroughly cleansed and whitewashed, or washed with coal 

 oil, and when the moths are frying numbers may be attracted 

 to the flames of a bright light ; also when the larva? are at work, 

 the grain should be shovelled over frequently to disturb them. 

 The beautiful genus Adda is at once known by its exces- 

 sively long antenna 1 . The larva makes a flat case, and feeds 

 on the leaves of various low plants, such as the wood Anemone 

 and Veronica. The A. Ridingsella of Clemens has coppery 

 brown fore wings, with a pale grayish brown mesial patch 

 dusted with black, and four or five black spots at the inner 

 angle, while the hind wings are fuscous. 



O O 



Hyponomeuta lias a smooth head, with rather short, slender, 

 reflcxed, subacute labial palpi ; the fore wings are white, dotted 

 in rows with black, and on the base of the hind wings is a 

 transparent patch. The larva? are gregarious, and the pupa is 

 enclosed in a cocoon. //. rniU(.'j>ini<-iic!lu Clemens is white, 

 with the base of the costa blackish, and with longitudinal rows 

 of distinct black dots, two of which, one along the inner mar- 

 gin, and one along the fold, are plain. The hind wings are 

 blackish gray. 



In D(.'j>ir^(iria the fore wings are unusually oblong, being 

 rounded at the apex ; and the hind wings are broader than 

 ii>ual, with the inner edge emarginate opposite the subme- 

 clian vein, and rounded opposite the internal vein. The abdo- 

 men is flattened above, with projecting scales at the sides. 

 The larvae of this genus arc extremely active, and feed on a 

 variety of substances ; some in rolled up leaves of composite 

 plants, some in the leaves and others in the umbels of the 

 umbelliferous plants. Many of the worms descend from the 

 plant on the slightest agitation, so that considerable caution is 



