Article beginning on page 120.
Psyche 11:120, 1904.

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120 PSYCHE [December
The cocoons made by the larvae fed on P. virginiana were more tancolored than those of the larvae fed on P. mofina, which were very dark brown, almost blackish.
SPIDER CALLS.
BY WM. T. DAVIS, NEW BRIGHTON, STATEN ISLAND, N. Y. IN the August PSYCHE, Mr. Fred. H. Lahee gives an account of the drumming habits of Lycosa kochii.
On Staten Island I have on several occasions heard the purring spiders, once as early as March 24th. On a warm day in April, 1887, I
made this note; "A number of spiders were running about and when they came to a dead leaf in the proper position, they struck their palpi rapidly against it, pro- ducing quite a noise thereby. I could not see that they attracted one another though I suspect they were all males that produced the noise, in which case they would naturally keep at a distance."
In his chapter on " Notes by the way " in Pepacton, Mr. Burroughs writes : - ('I have discovered, also, that we have a musical spider. One sunny April day, while seated on the borders of the woods, my attention was attracted by a soft uncertain purring sound that proceeded from the dry leaves at my feet. On inves- tigating the matter, I found that it was made by a busy little spider. Several of them were travelling about over the leaves as if in quest of some lost cue or secret. Every moment or two they would pause, and by some invisible means make the low purring sound referred to."
These additional references do not add anything new to Mr. Lahee's observa- tions, but have been submitted at the suggestion of Mr. Emerton, who has kindly identified one of the drumming spiders from this island as a male Lycosa kochii.



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