Sewelel or Sewellel: How To spell?

The word Sewelel is misspelled against Sewellel, a noun meaning "A peculiar gregarious burrowing rodent (Haplodon rufus), native of the coast region of the Northwestern United States. It somewhat resembles a muskrat or marmot, but has only a rudimentary tail. Its head is broad, its eyes are small and its fur is brownish above, gray beneath. It constitutes the family Haplodontidae. Called also boomer, showt'l, and mountain beaver."