0000950129-01-503283 424B3 1 20011001 LEXICON GENETICS INC/TX 0001062822 2835 760474169 1231 424B3 33 333-67294 1750133 4000 RESEARCH FOREST DRIVE 281-364-0100 THE WOODLANDS TX 77381 2813640100 4000 RESEARCH FOREST DR THE WOODLANDS TX 77381 424B3 1 h91031b3e424b3.txt LEXICON GENETICS INCORPORATED - REG. NO. 333-67294