THAUMASIA. 309 
spines. Protarsii. and ii. with 2—2—2 very long spines beneath, besides laterals ; protarsi of all four pairs 
of legs with a single, small, central, apical spine beneath. Tarsi not flexible. Legs 1, 4, 2, 3, or 1-2, 4, 3. 
The two species known to me may be distinguished as follows :— 
Males. 
a. Clypeus as high as three diameters of an anterior central eye. Anterior 
branch of tibial spur long (one-third the length of the tarsus), compressed, 
dilate, geniculate basally, very slender anteriorly, sinuously curved, its 
apex finely pointed, gently curving downward. Small central basal lobe of 
bulb not bifid, rounded-rectangular, its inner anterior angle short . . . velo, E. Simon. 
6. Clypeus not higher than one diameter of an anterior central eye. Anterior 
branch of tibial spur long (one-fourth that of the tarsus), very broad, com- 
pressed throughout, its apex bluntly pointed, forming a broad hook 
abruptly curved downward. Small central basal lobe of bulb bifid, outer 
branch larger, inner branch curved and very sharp . . . . . . . - wnecata, sp. n. 
Nore.—More material would probably show great individual variation in these characters. Unfortunately, 
we have but two males of 7’. velox from Central America. A specimen of the latter taken by myself on the 
Amazons differs somewhat from them, especially in the shape of the central lobe of the palpus. It is 
probable that this portion of the bulb will be found to be very variable in shape. If not, the Guatemalan 
form may belong to a different species. I have identified 7’. velow, Simon, from his description and from the 
above-mentioned male from the Amazons in the British Museum. 
1. Thaumasia velox. (Tab. XXX. figg. 5, 5 a-c, ¢ .) 
Thaumasia velox, E. Simon, Ann. Soc. Ent. Belg. xlii. p. 18 (1898) °. 
Type, g, in coll. E. Simon. Total length 8 millim. 
Carapace and legs yellow, the former broadly margined with white pubescence. Abdomen olive-brown above, 
with a short, anterior, dorsal, central, pale band. 
Palpus of male:—Patella half as long as the tibia; the latter with a bibranchiate spur, its lower or outer 
posterior branch short, divergent, pointed at its apex, and concave-lamelliform; the upper or inner 
anterior branch much longer, extending one-third the length of the tarsus, sinuous, the base compressed 
and concave, the apex bent outward, strongly curved downward, very slender and sharply pointed. The 
small basal lobe is rounded-rectangular, its inner anterior angle sharper. The other long lobes, the 
canula, and the stylum do not differ sufficiently in the two species of the genus before me to merit 
description. ‘ 
Hab. Guaremata (Sarg).—Amazons 1. 
The two specimens from Guatemala, from which the above description is taken, are 
either identical with 7. velox, Simon, or belong to a very closely allied form. 
9. Thaumasia uncata, sp.n. (Tab. XXX. figg. 6,64, ¢ ; 7, 2.) 
Type d, gynetype 2, in coll. Godman & Salvin. Total length, ¢ 7, 2 9 millim. 
Carapace and legs yellow; abdomen darker in both sexes, exhibiting numerous cretaceous granules and 
a clear, dorsal, anterior, lanceolate, heart-shaped mark. 
Palpus of male :—Patella about half as long as the tibia, the latter having a bibranchiate apical spur, the 
posterior branch short, divergent, lamelliform, concave, the anterior broad at the base, narrowing abruptly, 
