gammaridæ

[Lat. gammarus (q. v.), and fem. pl. adj. suff.- idæ.] Zool .: A family of Crustaceans, order Amphipod a. E ential character, the po e ion of large footjaws covering the whole mouth. Chief genera Gammarus, found in fresh, and Talitrus (Sand hopper), in salt water. *găm-mar-o-lite, s . [Latin gammarus (q. v.), and Gr. lithos =stone.] Palæont .: A fo il gammarus, or some crustacean of a certain affinity to it; a fo il crawfish. găm-ma-rŭs, s. [Latin gammarus, cammarus; Gr. kammaros =a kind of crab or lobster.] Zool .: The typical genus of the family Gamma ride (q. v.). Gammarus pulex is the fresh-water shrimp. The specific name pulex means that it leaps when on the land like a flea. [PULEX.] In the water it swims on its side.