1964] 
Levi — Spider Genera 
87 
Description. Carapace, sternum olive-gray. Legs yellow with nar- 
row gray rings. Abdomen spotted with white, gray and black pigment 
on dorsum (Fig. 33) ; black on venter with many fine light yellow 
spots where pigment is lacking. Carapace slightly pointed between 
anterior median eyes. Eyes subequal in size. Anterior median eyes 
their radius apart, touching laterals. Posterior median eyes their 
radius apart, one-third diameter from laterals. Total length 1.8 mm. 
Carapace 0.68 mm long, 0.66 mm wide. First patella and tibia, 
0.89 mm ; second, 0.62 mm ; third, 0.53 mm. Fourth femur, 0.85 mm ; 
patella and tibia, 0.89 mm ; metatarsus, 0.60 mm ; tarsus, 0.47 mm. 
Diagnosis. Chrosiothes niteroi has a much smaller depression in 
the epigynum (Fig. 32) than other Chrosiothes. 
Chrosiothes iviei sp. n. 
Figures 37-39 
Type. Female holotype from Fish Springs, Salton Sea, Imperial 
County, California, 2-12 March 1941 (A. and W. Ivie), in the 
American Museum of Natural History. The species is named after its 
collector. 
Description. Carapace yellowish with a dusky median band as 
wide as eye region in front, narrowing behind, and a narrow black 
border. Area around eyes reddish. Sternum yellow, dusky on sides. 
Legs yellowish with wide brown rings on distal ends of femora and 
tibiae. Abdomen white with dusky and black pattern (Fig. 39) on 
dorsum ; venter white with irregular black streaks ; black anterior and 
above pedicel. Eyes subequal in size. Anterior median eyes one 
diameter apart, less than one-quarter from laterals. Posterior eyes 
two-thirds their diameter apart. Abdomen suboval with slight lateral 
humps anterior (Fig. 39). Total length 2.0 mm. Carapace 0.75 mm 
long, 0.75 mm wide. First patella and tibia 1.06 mm; second 0.68 
mm; third 0.57 mm. Fourth femur 1.17 mm; patella and tibia 1.06 
mm; metatarsus 0.82 mm; tarsus 0.50 mm. 
Diagnosis. The epigynum has no distinct structures (Fig. 38), 
but the ducts (Fig. 37) are slightly different from those of other 
species. The abdomen shape (Fig. 39) separates this species from 
C. chirica. 
Record. California. Orange Co.: Laguna Beach, 27 July 1931, 
9 paratype, (W. Ivie, AMNH). 
