| OCR Text |
Show 1890.] OF THE FAMILY BUTHIDCE. 131 Tergites almost wholly smooth; the sixth bearing a few minute scattered granules, the seventh somewhat closely but finely granular ; each of the first six furnished with a smooth median keel, the seventh with a low anterior median elevation, and two lateral almost obsolete granular keels. Sternites wholly smooth, sparsely punctured, obsoletely bisul-cate. Tail wholly without keels ; the first four segments shallowly excavated above and feebly granular; the first three furnished posteriorly on each side with two large granules which mark the positions of the terminations of the keels that have disappeared ; on the first segment the superior keel is further represented by one or two granules anterior to the terminal one; on the other segments each superior keel is represented by a row of punctures ; upper surface of the fifth posteriorly hollowed; under surface of the segments conspicuously but somewhat sparsely punctured. Vesicle punctured beneath, with a tuft of setae above and another round the large spine which is situated beneath the aculeus; aculeus stout and considerably curved. Palpi'. humerus almost wholly smooth ; the positions of the normal carina? marked by a few granules and setiferous pores ; brachium sparsely and weakly granular in front, rounded, smooth and punctured elsewhere ; manus narrow, sparsely punctured, sparsely granular in front ; digits long and curved, in contact throughout their . extent; the internal series of teeth widely separated from the median rows. Legs almost entirely smooth, not carinate. Pectines projecting slightly beyond the fourth coxae; furnished with 18 teeth, of which the basal is much dilated. Measurements in millimetres.-Total length 29; cephalothorax, length and width 3-5: length of tail 18 ; of 1st two segments 5 ; of 5th 3*5: humerus, length 3; brachium, length 3-5, width 1*5; manus, width 1*3 ; length of " hand-back " 1 ; of movable digit 4. A single female, probably immature, specimen in the Museum, collected at Mombassa by Mr. Grose Smith. Very closely allied to the typical form of L. fischeri, Karsch, from Barawa (Somali). This species is unknown to me, but the description of it fails in a number of particulars to apply to the specimen here named. These particulars, although of small importance when considered separately, constitute in the aggregate a sufficiently wide distinction to justify the separation of this specimen as the type of a new variety. Thus the cephalothorax of L. fischeri is said to be adorned with two oblique yellow bands which meet at an angle in the middle line ; these bands are not observable in L. nigrimanus: the upper surface of the abdomen in L. fischeri is said to be adorned with a median wide yellow band, no mention being made of lateral spots; in L. nigrimanus this band is not complete, nor would it be wide if it were so, for the median spots exist only on the posterior half of the tergites and are narrow; moreover there are very conspicuous lateral |
