SAN FRANCISCO, Sept 20: California scientists have discovered four species of legless lizards hidden in unlikely habitats among central valley oil derricks, sand dunes at the end of a Los Angeles airport runway and other arid and desolate spaces. The findings, announced in a publication of the Museum of Comparative Zoology at Harvard University this week, brings the number of known snake-like lizard species living in California up from one to five. (agencies)