102 Mr. R. I. Pocock on Neotropical Scorptons. 
tubercular, the first more coarsely so than the second and the 
econd than the third, the 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 veszcle slender, very 
finely granular beneath, smooth and flat above ; the aculeus 
very lightly curved. 
Palpi moderately slender, without keels and granules, 
marked with large ocelliform setiferous pores ; manus wider 
than the brachium, 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 those 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 
laminze composed of about nine or ten pieces. 
Stigmata small, slit-like. 
Measurements in millimetres.—Total length 30, of cara- 
pace 3°4, of tail 17; width of the first segment 2:2, of the 
fitth 1:8. 
A single female specimen from Rio Grande do Sul (Dr. H. 
von Jhering). 
This species resembles C. brachycentrus 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, &e. 
EXPLANATION OF THE PLATES. 
PrAne iV; 
Fig. 1. Broteas Gervaisti, sp. n. Foot of posterior limb. 
Fig. 2. Broteochactas delicatus (Karsch). oot of posterior limb. 
Fig. 3. Broteochactas nitidus, sp. 1. _ Foot of posterior limb. 
Fig. 4. Teuthraustes alramentartus, Simon. oot of posterior limb. 
Fig. 4a. Ditto. Carapace from above. 
Fig. 4b. Ditto. Carapace from the side. 
Fig. 5. Hadrurochactas Sclatert, gen. et sp. n. Foot of posterior limb, 
Fig. 5a, Ditto. Carapace from above. 
Fig. 6. Heterochactas Gervaisit, gen, et sp. n, Carapace from above. 
Fig. 6a. Ditto, Carapace from the side, 
