41 
the hills, but as soon as the food became scarce in these local- 
ities the grasshoppers invaded the lower portions of the city 
and vicinity and destroyed almost every green thing in fields 
and gardens. As they reached their adult stage numerous 
swarms left the infested region in search of more suitable 
feeding-grounds, and became thus established in many places 
south and south-east of Duluth. No doubt other swarms had 
migrated as early as 1893, and had found new homes near Pine 
City. Rush City, Taylor’s Falls, and elsewhere. As has already 

FIG. 20.—a, single egg of Pellucid Locust; b, egg-mass opened to show eggs inside; 
¢, egg-mass; i, female; h, male. Lesser Migratory Locust; d, female; e, male; f, pupa 
Natural size. Original. 


