From The Collaborative International Dictionary of English v.0.48 :
Chelifer \Chel"i*fer\, n. [Gr. chhlh` claw + -fer.] (Zool.)
See Book scorpion, under Book.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
Chelifer
n 1: a genus of Chelonethida [syn: Chelifer, genus Chelifer]