This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Stihi (Albanian)
Stihi is represented as a fire-breathing dragon guarding a treasure and described as a huge multi-headed female serpentine dragon. It is believed to spit fire, cause drought, storms, flooding, earthquakes and other natural disasters against mankind. In Albanian mythology she is usually fought and defeated by a drangue, a semi-human winged divine hero and protector of mankind.