22 BULLETIN" 843, IT. S. DEPARTMENT OF AGRICULTURE. 
There is no definite place in the life history of this species to 
separate the different broods. Apparently there are two broods or at 
least a partial small second brood for this locality. The fact that 
larvae were observed in all stages of development during the entire 
season would suggest two broods. Further, the fact that first-brood 
adults began issuing rather late, and that so few egg clusters were 
found in late August and September, would suggest only a partial 
second brood. 
SUMMARY FOR 1919. 
Hibernating adults appeared June 16. 
Beetles present in large numbers by June 25. 
Beetles began depositing eggs June 25. 
Eggs began hatching July 10. 
Larvse began to transform to pupae July 22. 
Adults of first generation issued July 28. 
(August 28. 
Egg clusters, second brood, found (September 2. 
Maximum numbers first-brood adults observed September 1. 
Adults began to become sluggish September 10. 
Maximum damage accomplished August 1 to September 1. 
Second-brood eggs were probably deposited, but not observed, before August 28. 
INJURY. 
The bean ladybird so far as observed confines its feeding to beans, 
and when taken on other plants is never found feeding. The 
variety of beans seems to make no particular difference as to sus- 
ceptibility to attack. The adults do not attack the very young 
plants to any considerable extent. This fact is probably due to the 
small number of hibernating individuals. Furthermore, the over- 
wintering adults do not concentrate their attack, but move from plant 
to plant. Thus the damage is less noticeable. Although the adults 
usually eat entirely through the leaf, they often merely scrape the 
surface, leaving a network of veins plainly visible. Later in the 
season as the foliage begins to die they attack the pods, sometimes 
completely riddling them, but usually eating out small spherical 
holes here and there along the pod. In the case of canning beans 
this injury may cause considerable loss, while on seed beans it is not 
so serious. 
The percentage of injury by a number of adults is small as com- 
pared to that caused by an equal number of larvse. The larva? begin 
their attack on the leaves, invaribly feeding at first on the underside. 
Instead of eating through they scrape the surface, leaving the skele- 
ton of the leaf in plain view, although ivith continued feeding in a 
limited space they may riddle the foliage. 
Maximum damage occurred in this locality during the month of 
August. This is the period when the new adults are feeding along 
