170 
Psyche 
[June 
trail was laid and total distance traveled in the opposite direction. 
Primed males exhibited a positive polarity by following the correct 
direction more often than the incorrect direction (x 2 = 7.36, df— 1, 
P < .01), and by traveling further in the correct direction along the 
female trail (Wilcoxon test, T— 252.5, P< .01). Unprimed males 
did not show a directional preference (x 2 = 0.0, df = 1, P > .50; 
Wilcoxon test, T= 525, P > .64; Table I). 
Primed and unprimed male L. rabida showed no difference in 
the frequency of courtship during dragline-following (x 2 = .613, 
df — 1, P > .50) or in the elapsed time during a test before court- 
ship was observed (= courtship latency) (Mann-Whitney test, T = 
70.0, P > .54; Table I). Primed males that courted showed no 
correlation between total distance of dragline followed and court- 
ship latency (Spearman’s rho, p = + .026, P > .53). Unprimed 
males courting early in the test showed decreased total dragline- 
following (Spearman’s rho, p = + .692, P < .01). Comparing 
primed and unprimed males that both courted and followed drag- 
lines, no difference was found in the total amount of dragline- 
following (Mann-Whitney test, T — 747.0, P > .65). 
DRAGLINE-FOLLOWING IN LYCOS A PUNCTULATA 
L. punctulata was a more difficult species to study experimentally 
than L. rabida. Females often would not lay the required lines and 
both sexes tended to break the lines by catching a claw on them, 
and the males by running through the lines. 
In 1974, 9 of 10 males in each group exhibited dragline-following. 
The total distance followed for primed (Y = 63.1 ± 20.7 cm) and 
unprimed (Y = 63.1 ± 17.5 cm) males did not differ significantly 
between the two groups (Mann-Whitney test, T — 47.5, P> .57). 
Incidence of courtship did not differ between the two groups with 
primed males courting during one and unprimed males courting 
during three of the trials (x 2 = 1.25, df = 1, P >.70). Data for the 
two groups were pooled for further analysis. 
In 1976 only unprimed males were used. During 34 trials 23 
males followed a mean total distance of 52.4 ±11.3 cm. No dif- 
ferences were found between pooled 1974 data and the 1976 (all 
unprimed) data for incidence of following (x 2 = 3.41, df — 1, P> 
.05), or for distance followed (Mann-Whitney test. T— 235.5, P 
> .77). Unprimed males in 1976 exhibited courtship three times 
during dragline-following; no difference in courtship frequency was 
