The Cheliceral Muscles of the Scorpion Heterometrus fulvipes
The movements of a scorpion chelicera are brought about by eighteen muscles. Observations on the origin, insertion, and action of each of these muscles have been recorded.
Vays, A. B.
"The Cheliceral Muscles of the Scorpion Heterometrus fulvipes,"
Bulletin of the Southern California Academy of Sciences:
Available at: http://scholar.oxy.edu/scas/vol73/iss1/4