336 Dr. Mello-Leitio on some 
transverse rows of very sinall tubercles. Free dorsal seg- 
ments unarmed, with a row of granules ; dorsal anal plate 
unevenly granular. Coxa iv. granular, with an apical 
outer spur, obliquely directed backwards; this spur is short, 
blunt, and without accessory branch. Trochanter iv. un- 
armed ; femur right with stout spines. Pedipalps shorter 
than body, the femur with an apical inner spine. Ventral 
surface roast-yellow ; the stigmatic segment bordered with 
black. Cephalothorax chestnut, with two large pale yellow 
spots ; fields i. to iv. as the cephalothorax, the high spines 
on iii. olive-yellow ; marginal fields dark olive-brown with 
tips of the tubercles yellowish. Pedipalps and legs olive- 
brown ; posterior legs darker with the coxal spur blackish. 
Hab. Itatyaya (Rio de Janeiro). Coll. Carlos Moreira. 
Type in the National Museum. 
Genus ACANTHOGONYLEPTES, nov. 
Eye-turret closer to the anterior margin of the cephalo- 
thorax than to first transverse groove. Cephalothorax 
narrow, parallel-sided ; lateral margins of the abdominal 
scutum evenly rounded to transverse groove iil., 
forming a right angle with the hinder margin. Dorsal 
scutum with four transverse grooves, 1. and 1. united by 
longitudinal one. Fields i., i1., and iii. with two median 
tubercles ; iv. and free dorsal segments 1. and 11. unarmed ; 
iii. with a median high cone. Pedipalps shorter than body ; 
the femur with an apical inner spine. Tarsus i. with six 
joints, ii., ii., and iv. with more than six; coxe 1, to ill. 
short, slender, and parallel ; iv. stouter and longer than the 
others together. Cheliceree weak and normal in both 
sexes. Posterior legs in male with spurs and stout spines. 
Tarsi ili. and iv. with apical claws without teeth and with 
pseudonychium. 
Type. 
Acanthogonyleptes pulcher, sp. n. 
3 .—8 mm. 
Anterior margin of the cephalothorax with three small 
spines at the lateral corners. Hye-turret much closer 
to anterior margin than to first transverse groove, 
very high, with two small close tubercles. Cephalothorax 
narrow and smooth. Fields i., ii., and iil. of the abdominal 
dorsal seutum with two median tubercles. The tubercles of 
ii. higher than of i., and those of iil. the highest ; every field 
with scattered granules; field iv. aud free dorsal segments 1. 
