BUTHUS. 



17 



black, and sometimes the area both behind and in front of the 

 tubercle infuscate ; dorsal area of abdomen yellow or lightly 

 infuscate, with clear posterior border ; tail entirely clear yellow ; 

 chelae and legs either entirely clear yellow or slightly infuscate in 

 parts. ($ ) Carapace as long as the 1st and half the 2nd caudal 

 segments or as the 5th; anterior keels granular, abbreviated in front; 

 ocular tubercle very wide ; the superciliary crests granular and 

 continued behind the eyes by a pair of converging series of 

 granules ; posterior keels granular, very widely separated, their 



A. 



B. 



C. 



/" T— • ''*"*'.. 



I 

 f 



/ 



Fig. 8. — A. Vesicle, 5th caudal segment, and part of the 4th caudal segment of 

 Bvthus tainulits. 



B. 2nd and 3rd with part of 1st and 4th caudal segments of Buthus doria, 



subsp. odonturus. 



C. 4th and 5th caudal segments and vesicle of Buthus australis, subsp. 



finitimus. 



(Anterior to the left, posterior to the right.) 



a, inferior lateral keel of 5th segment ; b, median lateral of 2nd and 3rd seg- 

 ments ; c, superior; d, superior lateral; c, inferior lateral; /.inferior 



i Indian. 



anterior extremities turned externally in the direction of the 

 lateral keels ; intercarpal spaces weakly and sparsely granular. 

 Terga weakly granular mesially, more strongly and closely a1 the 

 sides; the three keels distinct and granular, the laterals diverging 

 and on the anterior terga passing in front into a curved transverse 

 crest ; external keel on the 7th tergum weak and not united to 

 the internal. Stermi smooth, the last with four subequal granular 

 keels. Tail (fig. 8 B) about five times as long as the carapace, 

 1st segment wider than long, 4th less than twice as long as wide, 

 1st and 2nd segments with 10 keels: median lateral keel weak 

 on 3rd, absent on 4th, inferior median keels weak and posteriorly 

 abbreviated on 4th ; inferior median keels of 2nd furnished with 



c 



