236 
Psyche 
[December 
wide. Males vary from 2. 3-4.0 mm in total length, carapace 1 .3-1.6 
mm wide. 
Diagnosis. Females differ from those of S. eugeni in the shape 
of the base of the epigynum, trapezoidal with the lateral margins 
sclerotized (Figs. 11-14). The male differs from that of S. eugeni 
by having only one hook on the median apophysis (Figs. 23, 24). 
Natural History. Singa keyserlingi has been collected from open 
woods, in low shrubs and by sweeping grass on lakeshores. Mature 
males have been collected in all months between May and August. 
Females have been collected through September. 
Distribution. From Edmonton, Alberta, Smoky Falls, Ontario 
to Black Warrior National Forest (Winston Co.), Alabama 
(Map 1). 
Singa eugeni sp. n. 
Figures 25-34, Map 1 
Singa rubella, — Keyserling, 1893, Spinnen Amerikas, vol. 4, p. 284, 
pi. 14, fig. 209, $ . Not Epeira rubella Hentz. 
Type. Male holotype and female paratype from T8N, R5E, 
S9NWJ4, Iowa County, Wisconsin (Susan Riechert), in the Mu- 
seum of Comparative Zoology. The species is named after Count 
Eugen Keyserling. 
Description. Female. Carapace orange with a wide black band 
covering eye region (Fig. 32), narrowing behind. Clypeus black. 
Chelicerae brown-black. Labium black. Sternum yellowish with dark 
brown margin. Legs yellow. Dorsum of abdomen with two longi- 
tudinal dark bands; at each end the bands are darker and approach 
each other (Fig. 32). The bands are separated by a white pigment 
line. The sides are white ( Fig. 31); the venter is yellowish with 
an indistinct dark area in the middle. The anterior median eyes are 
one and one-quarter diameters apart, less than one diameter from 
laterals. Posterior median eyes are less than one-quarter diameter 
apart, one and one-half diameters from laterals. Total length 4.6 
mm. Carapace 2.0 mm long, 1.4 mm wide. First femur, 1.3 mm; 
patella and tibia, 2.2 mm; metatarsus, 1.2 mm; tarsus, 0.6 mm. 
Second patella and tibia, 1.9 mm; third, 1.2 mm; fourth, 1.7 mm. 
Male. The coloration of the male is like that of female. The 
carapace is narrower in front than in the female. The anterior 
median eyes overhang the chelicerae. The anterior median eyes are 
more than one diameter apart, their radius from laterals. The pos- 
