102 Mr. E. I. Pocock on Neotropical Scorpions. 



tubercular, tlie first more coarsely so than the second and the 

 second than the third, tlie inferior lateral keels visible but 

 smooth or nearly so ; the fifth segment with smooth and 

 rounded upper edges and a posteriorly flat upper surface, the 

 three inferior keels weak anteriorly, irregularly granular in 

 the posterior half of the segment ; the vesicle slender, very 

 finely granular beneath, smooth and flat above ; the aculeus 

 very lightly curved. 



Pal'jji moderately slender, without keels and granules, 

 marked with large ocelliform setiferous pores ; manus wider 

 than thebraciiium, the movable digit considerably longer than 

 the hand-back, which is itself much longer than the width of 

 the hand ; the six larger teeth of the internal series separated 

 from the smaller teeth of the median series, which are 

 arranged in two irregular rows ; the large teeth of the exter- 

 nal series, about five in number, contiguous with tliose of the 

 median series. 



Legs smooth, the penultimate segment hairy beneath, 

 spined ; the last segment furnished beneath with long white 

 hairs, this segment not spined beneath in the feet of the first 

 and second pairs, but armed with five or six pairs of spines 

 in the legs of the third and fourth pairs. 



Peciines armed with 13-14 teeth, with the intermediate 

 laminas composed of about nine or ten pieces. 



Utigmata small, slit-like. 



Measurements in millimetres. — Total length 30, of cara- 

 pace 3'4, of tail 17 j width of the first segment 2*2, of the 

 fifth 1-8. 



A single female specimen from Eio Grande do Sul [JDr. H. 

 von Jhering). 



This species resembles C. hrachycentrus of Thorell in 

 having the lower surface of the anterior caudal segments 

 thickly granular. It may be recognized by its smoothness 

 and by the absence of granules and keels on the palpi, &c. 



EXPLANATION OF THE PLATES. 



Plate V. 



Fig. 1. Broieas Gervaisii, sp. ii. Foot of posterior limb. 



Fi(i. 2. Broteochactus delicatus (Karsch). Foot of posterior limb. 



Fvj. 3. Broteochactas niUdvs, sp. u. Foot of posterior limb. 



Fi(j. 4. I'euthrauntes alramentarius, Simon. Foot of posterior limb. 



Fiy. 4 a. Ditto. Carapace from above. 



Fiy. 4 h. Ditto. Carapace frooi the side. 



Fhj. 5. Hadrurochactas Sclateri, geo. et sp. u. Foot of posterior limb. 



Fiy. 5 a. Ditto. Carapace from above. 



Fiy. 6. Meterochactas Gervaisii, gen. et sp. n. Carapace from above. 



Fiff. G a. Ditto. Carapace from the side. 



