Pu'lex

[L. flea.] genus of insects, of the family PulicidiB. P. cheopis (ke'o-pis), the rat flea, believed to be the active agent in the di emination of plague. P. fascla'tus, the rat flea which may also attack man. P. irr'itans, the common flea which infests man. P. pal'lipes, a flea found on rats and occasionally attacking man. P. pen'- etrans, Sarcophylla pene trans, jigger. P. serr at'- iceps, the dog flea, infesting dogs and cats, and often man.