i8 
Psyche 
[March - June 
Styposis rancho, new species 
Figures 5-6 
Type. Male type from Rancho Grande, Venezuela, December 20, 
1954 (A. M. Nadler), in the American Museum of Natural History. 
Description. Carapace with a slightly dusky border. Abdomen 
with some white pigment on dorsum. Anterior median eyes minute. 
Anterior lateral eyes about one diameter apart. Posterior median 
eyes one-third of their diameter apart. Chelicerae with one tooth on 
the anterior margin. Abdomen probably wider than long, damaged 
in the type specimen. Total length 1.6 mm. Carapace 0.62 mm. long, 
0.54 mm. wide. First femur, 0.96 mm.; patella and tibia, 1.02 mm.; 
metatarsus, 0.75 mm.; tarsus, 0.34 mm. Second patella and tibia, 0.77 
mm.; third, 0.45 mm.; fourth, 0.65 mm. 
Diagnosis. The eye arrangement (Fig. 5) and the palpus (Fig. 6) 
separate this species from others. 
Styposis scleropsis, new species 
Figures 23, 24 
Type. Male from Summit, Panama Canal Zone, August 23-28, 
1950 (A. M. Chickering), in the Museum of Comparative Zoology. 
Description. Carapace, sternum, legs light brown. Abdomen gray- 
ish white. Carapace sclerotized, reticulate. Cephalothorax slightly 
elongated behind (Fig. 24). Anterior median eyes half the diameter 
of other eyes. Anterior median eyes their radius apart, two-thirds 
diameter from laterals. Posterior median eyes almost touching, their 
radius from laterals. Chelicerae heavy with a large tooth far removed 
from base of fang and a smaller tooth on base of larger one. Abdo- 
men higher than long. Around the spinnerets a very lightly sclero- 
tized ring, hardly different in color from less sclerotized portions. 
Colulus with two setae quite far anterior. Total length 1.2 mm. 
Carapace, 0.78 mm. long, 0.52 mm. wide. First femur, 1.00 mm.; 
patella and tibia, 1.18 mm.; metatarsus, 0.65 mm.; tarsus, 0.39 mm. 
Second patella and tibia, 0.76 mm. ; third, 0.48 mm. ; fourth, 0.66 mm. 
Diagnosis. This species resembles Cerocida in the slightly elong- 
ated cephalothorax and the high abdomen. However, the small anter- 
ior median eyes and the palpal structure place it in Styposis. The 
shape of the carapace and the transparency of the palpal sclerites (Fig. 
23) separate it from other species. 
