OCR Text |
Show 1890.] OF THE FAMILY BUTHID.E. 133 Tail robust, somewhat widely and deeply excavated above, the sides of the excavation with a few granules, which in the fourth and anterior part of the fifth segment form a series parallel to the superior keel; superior keels strongly developed and coarsely granular, the terminal granule, except in the fifth, taking the form of a large tooth ; the fifth segment deeply depressed behind, the superior keel evenly granular throughout; the superior lateral keel weakly granular, well developed in the first segment, becomes progressively weaker from before backwards, being wholly absent on the fourth ; inferior surface of the first and second segments wholly smooth, without keels, but marked with serially arranged setiferous pores; lateral surfaces of the third sparsely and coarsely granular, keelless, inferior surface also keelless and almost smooth; inferior and lateral surfaces of the fourth segment somewhat coarsely granular, but without keels ; inferior and lateral surfaces of the fifth coarsely and somewhat thickly granular, especially in its posterior half. Vesicle coarsely and subserially granular beneath and sparsely hirsute, smooth above and furnished with a median tuft of setae ; subaculear spine small and blunt. Palpi beset with setiferous pores ; upper surface of humerus smooth except for the granular keels which define it in front and behind; posterior and anterior surface bearing longer and smaller tubercles ; inferior surface smooth ; brachium bearing a few granules and tubercles above in front, the rest smooth and rounded and without keels ; manus rounded, slightly wider than the brachium, neither keeled nor granular; without a spine; dactyli of moderate length, curved, in contact throughout, neither lobate nor sinuate ; the armature in the proximal third of the dactylus resembles that supposed to be characteristic of Lepreus, inasmuch as the inner series is composed of isolated denticles; in the distal half, however, owing to the increase in size and partial separation of the apical or two apical denticles of the median rows and their approximation to the denticles of the internal lateral series, the arrangement is that of Tityus as restricted by Dr. Thorell. Legs almost smooth ; femora feebly granular along their upper and under edges ; tibice of the two posterior pairs spurred; coxce smooth. Pectines short, bearing from 15-17 teeth, whereof the basal is much enlarged, although of much the same shape as, and not projecting beyond the line of, the rest. Stigmata very small, slit-like. Two female specimens from Table Mountain, collected by Dr. G. E. Dobson. Measurements in millimetres.-Total length 39; cephalothorax, length and width 4 : length of tail 20'2 ; of 1st two segments 5*2 ; of fifth segment 4-2 ; width of first segment 2*7; of fifth 2*5 ; length of vesicle and aculeus 5: humerus length 3*7 ; brachium length 4*5, width 2 ; width of manus 2 ; length of" hand-back " 2 6 ; of movable digit 4-2. Differs from U. lineatus (Koch) and U. variegatus (Koch) in |