Mello-Leitão — Pedipalpos do Brasil' 
71 
In the Thelyphonidae we have creaíed a genus Âmauro mas* 
tigon for Mastigoproctus annectens Werner, 1916, characterised as fol- 
lows: — 
Amauromastigon g. n. — Cephalothorax with a marginal ridge, fromi 
íhe middle (eyes) to the lateral eyes. Ommatidiae presént. 
Ocular turret not clearly defined. First abdominal sternitq 
without median cleft. Tibial processes of the palpi and 
tarsus I similar in both sexes. 
In the genus Mastigo proctus we discovered a new 
species: 
Mastigoproctus perditus sp. n. (Fig. 16) Body 30 mm. Trunk dark 
fulvous, granulated. Palpi light maliogany colour, Coxa of 
palpi a good deal shorter than the width of the cephalotoírax 
upper spines. Third segment of tarsus I larger than the se- 
cond. Ommatidia circular. 
Far the Amblypygi we followed the division in íamilies 
proposed by Pocock in 1902, and give Keys for the separation 
of genera, as well as the species of Damon, Phrynus, He mi- 
phrynus and Heterophrynus. Of this last genus two new spe¬ 
cies are described: 
Heterophrynus brevimanus sp. n. (Fig. 21). It is distinguished from H . 
longicornis (Butler), to wich it is nearest, in having the 
lower apical spine of the tibia of the palpi smaller than the 
preceding; tibia and femur of palpi equal. Femur of the. 
palpi a good deal shorter than the width of the cephalothorax 
(just larger than its lenght) and much smaller than thq 
femura of the legs (less than half of femur I, and nearly 
half that of femura of II and IV). Pará. 
Heterophrynus vesanicus sp. n. (Fig. 23). Of the group, of HeterophrT 
ni with very long femur of the palpi (nearly double jthe| 
width of the cephalothorax), being distinguished from the other 
species of the group in having the spines of the tarsus of 
the palpi aproximately egual in size. Matto Grosso. 
A new genus was discovered in the family Charonti- 
dae, the first in the neotropical region, between Charenius 
and Sarax, for a new species from Therezopolis. 
Enantiosarax g. n. — Tarsus of the palpi with bi-articulated daw. 
Tarsus of the palpi with two Upper basal spines, the proxP 
mal much smaller, and a smaller lower, apical spine. Tibia 
of the palpi flattened, with 6 upper spines, the apical one) 
much smaller than the previous. Tibia IV with four segments 
