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Show 1891.] ASSOCIATION OF GAMASIDS WITH ANTS. 649 LCELAPS MYRMOPHILA, n. sp. (Plate XLIX. 2 millim, Greatest breadth, about '52 Length of legs, 1st pair, about.. \52 „ 2nd „ „ . . -46 ,, ,, ord ,, ,, . . 'o[f ,, ,, 4tn „ „ . . 'OZ figs. 4-4 b.) 3 , millim. •66 •42 •50 •30 •31 •57 Colour lightish chestnut-brown. Texture highly polished, entirely without markings. Shape inversely oval, i. e. the larger end forward; the anterior margin projects very slightly above the rostrum, but this projection is rounded. The hinder part of the body is much more attenuated than the front part. The female is considerably wider in proportion than the male, but still diminishes to a rounded point behind. Dorsal surface considerably arched, particularly the anterior and central portions. Mandibles of male (fig. 4 a) have the fixed arm of the chela greatly curved near the end, which forms a strong tooth ; there is another large tooth close behind, and a much smaller one further back; the movable arm also ends in a strong curved tooth, just opposite that of the fixed arm, and has one other strongish tooth. Attached to the side of this arm is a large appendage, which is as thick as the arm and projects beyond it; it is of about equal breadth until near the distal end, then it suddenly diminishes and has a very small bifid termination. Epistome (fig. 4 b) almost five-sided, the median side very short, with a small point at each end directed forward ; the whole anterior portion of the epistome is edged with very fine points or teeth. There are a few extremely fine and small white hairs on the dorsal surface, too small to be depicted in a drawing on the scale of the figure; one pair, however, near the posterior end are considerably larger, although still small. The under surface of the female has the plates arranged in a manner similar to that figured in Lcelaps cuneifer. Legs in both sexes without apophyses; all legs terminated by claws and caruncles. Hab. Found commonly in the nests of Aphcenogaster testaceo-pitosa, Luc, near Ajaccio, in Corsica. L ^ L A P S EQTJITANS, n. sp, (Plate L. figs. 5-5 b.) 2 millim. Length, about '62 Greatest breadth, about *50 Length of legs 1st pair, about. . '50 „ 2nd „ „ .. -29 ,, „ 3rd ,, ,, .. 'ol „ 4th „ „ .. -38 >} This species has more resemblance to Lcelaps hilaris, Koch, than |