Lice
Easton's Bible Dictionary 1897
(Heb. kinnim), the creatures employed in the third plague sent upon Egypt (Ex. 8:16-18). They were miraculously produced from the dust of the land. “The entomologists Kirby and Spence place these minute but disgusting insects in the very front rank of those which inflict injury upon man. A terrible list of examples they have collected of the ravages of this and closely allied parasitic pests.” The plague of lice is referred to in Ps. 105:31.
Some have supposed that the word denotes not lice properly, but gnats. Others, with greater probability, take it to mean the “tick” which is much larger than lice.
Smith's Bible Dictionary 1863
International Standard Bible Encyclopedia 1915
lis (kinnim (Ex 8:17,18; Ps 105:31), kinnim (Ex 8:16), kinnam (Ex 8:17,18); Septuagint skniphes (Ex 8:16,18), ton sknipha, once in Ex 8:18; sknipes (Ps 105:31); Vulgate (Jerome's Latin Bible, 390-405 A.D.) scniphes; according to Liddell and Scott, under the word sknips, Slav. sknipa equals culex): The references, both in Exodus and in Psalms, are all to the plague of "lice." the Revised Version margin suggests "fleas" or "sandflies." The Septuagint rendering would favor "sandflies" or "mosquitoes," between which two insects the Old Testament writers would hardly be expected to discriminate. Mosquitoes belong to the order of Diptera, family Culicidae; the sandfly (Plebotomus papataci) to the family of Simuliidae of the same order. The sandflies are much smaller than mosquitoes, and are nearly noiseless, but give a sharp sting which may leave an unpleasant irritation. They are abundant in the Levant. In Southern Europe they cause the "three-day fever" or "papataci." As stated under GNAT (which see), there is little ground other than the authority of the Septuagint for deciding between "lice," "fleas," "sand-flies," or "mosquitoes" as translations of kinnim. See also under GNAT the note on ken, the Revised Version margin "gnat" (Isa 51:6).
Alfred Ely Day