lyQO.] OF THE FAMILY BUTHIDjE. 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 granu- 

 lar, 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 ; 

 latei'al 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, shghtly 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 sepa- 

 ration 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 pro- 

 jec(ing 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 3v ; brachium length 4*5, 

 width 2 : width of manus 2 ; length of" hand-back " 2(i ; of movable 

 digit 4-2. 



Differs from U. lineatus (Koch) and U. variegatus (Koch) in 



