the System at I'cs of Sco rp ions. 371 



Urodacus subarmatus, sp. n. 



? . — Colour a tolerably uniform yellowish brown. 



Carapace as long as the caudal segments 1 + 2 or 3 + 4, 

 rather longer than the fifth ; anteocular area smooth except 

 for some weak tubercles behind the anterior margin, the 

 margin obliquely truncate, with a shallow median notch ; the 

 ridges of the ocular tubercle continued in front halfway 

 across the anteocular area, and continuous behind with the 

 ridges bounding the posterior triangular impression. 



Terga very finely granular at the sides; the internal 

 granular keels of the last extending to the middle of the 

 plate, the external surpassing the middle ; last sternal plate 

 with two conspicuous smooth keels. 



Tail short, about four times as long as the carapace, mode- 

 rately robust, first segment about as wide as long, the fifth a 

 little more than twice as long as wide, wider than the fourth 

 and almost as wide as the second ; superior keels of segments 

 1-4 ending behind in a triangular spike, the anterior border, 

 however, of which is in the same straight line as the granular 

 superior crest ; supero-lateral crest also sharply granular ; 

 inferior crests smooth, those of the fourth at most weakly 

 granular ; fifth segment with denticulated keels, its lower 

 surface somewhat thickly granular between the keels, the 

 median of which consists of two rows of granuliform denticu- 

 latious ; sides and, to a lesser extent, the upper surface of 

 the segment granular ; vesicle thickly but finely granular, as 

 wide as the fifth caudal segment. 



Chelce wdth humerus weakly granular above; brachium 

 smooth, except the crests that border its anterior surface 

 above and below, the lower surface bordered behind by a 

 smooth crest, in front of which there is a row of eleven pores ; 

 hand smooth all over, except for a few granules on its upper 

 inner edge, thick, convex above, and furnished with two 

 fairly strong finger-keels, and a row of about eleven pores 

 beneath on the inner side of the keel of the underhand, and 

 about twelve irregularly arranged above it ; movable finger 

 furnished throughout three fourths of its length with three 

 closely packed rows of squamiform teeth, and in the distal 

 fourth with a single median row, flanked on the inner side 

 with about four short transverse rows of three teeth each 

 and on the outer side with about four pairs of transversely 

 set teeth. 



Protarsus of first and second le(/s with six (rarely five) long, 

 slender, subequal spines, that of the third with five, that of 

 the fourth with four. 



