More will probably be found. That’s the warning from authorities after finding 40 bodies — some “nothing more than ash and bone” — as hundreds remain missing in the state’s deadliest spate of wildfires. In one case, a septuagenarian couple sheltered in their Napa Valley swimming pool, but 75-year-old Carmen Berriz stopped breathing as the inferno abated. Theirs was among 3,000 homes destroyed as 21 fires scorched 300 square miles since last Sunday, mostly in Northern California. More than 8,000 exhausted firefighters continue to battle the blazes, reinvigorated by strengthened winds.