Mello-Leitão — Sobre os Bothriuridas Sul-Americanos 107 
browii subdrcular blotches. The three first sternites fiavous brown, the. 
fourth with blackened lateral and posterior margins and the fifth ne- 
arly entirely black. Tail violet brown, reticulated in black, ali the crests 
black, the lower surface a good deal darker, fulvescent. Vesiele with 
yellowish upper surface, all the convex part dark fulvo us nearly black, 
with two longitudinal lower stripes which extend from the base to the 
sting, separated by a black stripe of the same width and another at 
each side, alrnost contiguous to the black; sting fulvous with a smalB 
apical spot, sulphurous yellow, nearly regularly circular at the <apice 
of all the íemurae, tarsi lighter. Thighs brownish yellow as well as the 
trochanters 1, the other trocanters darkly reticulated and ali posseissing 
a sulphurous apical spot similar to that ou the femurae; under surface 
of the tarsi pale yellow, the spines fulvous. 
Palps: trocanter, femura and tibiae black, irregularly marked 
with dark fulvousf cheia dark fulvous with blackened lines; base of 
digiís blackened. Genital opercle yellowish brown. Combs whitish 
yellow. Carapace rough, opaque with lines of very sYnall granules 1 
only along the posterior border. Tubercle of the median eyes elongate 
with a median groove. 
Abdominal tergites; I and lí with narrow posterior granula- 
ted areas, these granular areas occupying nearly the half of tergites Iíl 
to V, the posterior 2/3 in V and nearly al VII; in VI very noticeable 
forming a festoou on the posterior fifth, with 4 conspicuous teethy 
there being besides a posterior marginal row of granules. All the tér- 
gites present a transversal anterior crest, with a mall procurved mediarf 
loop. Sternites shiny, rough, V nearly entirely granular, with thick re¬ 
gularly rounded granulation. Tail: segments I to III with lower lateral 
keels, well defined by granulated lines, occupying the apical half in 
I and II and the third iu III; segment IV irregularly granular at the 
sides. V very densely granular, with thick pointed granules, irregularly 
placed, areas forning a median keel reaching from one to the other ex- 
tremity of the segment ,two obliqúe lines on the posterior 2/5 directed 
towards the median line and then more irregularly parallel thereto; 
there are two lateral lower keels extending the whole length of the 
segment; stronger, more pointed in their posterior portion; on the 
posterior margin of segment V there is a row of small sharp pointed 
teeth. On the dorsal surface of the tail ,segments I to III present me-< 
dian upper lateral parallel keells, the space between the medians mucli 
excavated, smooth, and the space between these and the laterais grossly, 
granular; in IV the lateral keells occupy the posterior third only, are: 
very obliqúe and fuse with the median; there are no lateral crests- 
on V, the segment being nearly vertical close to the median keels and 
very granular. The caudal vesiele (telson) of excavated dorsal surface 
iu the rf (nearly as in B. bonariensis) and smooth, the remainder 
