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Show 136 MR. R. I. POCOCK ON T H E S C O R P I O N S [Mar. 18, Tail robust, almost parallel-sided ; conspicuously sulcate above; the upper surface at least of the four anterior segments minutely granular and furnished in addition on each side with a series of larger granules parallel to the keels ; the first and second segments with the four superior keels strongly developed, granular at the sides, almost smooth, not carinate, but deeply and sparsely punctured below; the third segment also with the superior keels well developed, but more granular at the sides and more closely punctured below, also bearing a faint indication of the inferior lateral keels ; fourth segment with only the superior keel well developed, the rest almost obsolete ; the sides and under surface thickly and coarsely granular and punctate ; the fifth segment very coarsely and thickly granular below and at the sides, the superior keel obsolete behind ; the upper surface hollowed behind. Vesicle ovate, smooth above, granular below, except for two smooth tracts which run backwards from the base of the aculeus ; the rest granular and setose; a large spine beneath the aculeus, which is of the ordinary form. Palpi. Upper surface of humerus minutely granular, the anterior and posterior keel strongly developed and coarsely granular ; anterior surface subtubercular and bounded below by a row of granules; inferior surface almost smooth, feebly granular only in front and proximally ; posterior surface furnished with a subtubercular keel ; the whole segment sparsely setose : brachium sparsely setose ; its anterior surface granular and subtubercular; its upper surface behind, its posterior and inferior surfaces smooth and rounded and punctured: manus hairy, with a tubercle at the base of the dactyli on the anterior surface, smooth, rounded, neither granular nor costate : dactyli very hairy, moderately long and curved, in contact throughout, neither sinuate nor lobate ; the arrangement of denticles is much the same as in the preceding species, i. e. in the distal third, owing to the enlargement and partial isolation of the distally apical tooth of the separate rows which constitute the median series, the inner series is composed in this part of the digit of pairs of teeth. Legs with femora anteriorly granular, but only subcarinate above ; patellae almost wholly smooth, the fourth pair only slightly granular ; tibice of two posterior pairs armed beneath with a spur ; coxce smooth. Pectines projecting beyond the edge of the fourth coxae ; furnished with 23 or 24 teeth, whereof the basal tooth is enormously enlarged but not longer than the rest. Stigmata slit-like. d • Differs from the $ in having the tail much longer (cf. measurements), in having the hand longer and armed with a larger and sharper tooth, and in having the basal pectinal tooth like the rest of the series. Measurements in millimetres.- $ .Total length 38; cephalothorax length 5, width 5 : length of tail 24 ; of first two segments 6-7 ; of fifth segment 5 ; width of first segment 4*3 ; of fifth 3 : length of humerus 4 ; of brachium 5; width of brachium 2 ; of manus D8 ; length of |