. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits. Spiders. 36 AMERICAN SPIDERS AND THEIR SPINNINGWORK. M. Si- mon's Studies. far as my observations warranted, I could find nothing to justify such con- jecture, and the records examined did not seem sufficiently clear to permit an opposite opinion. Since the issue of my work, however, some remarkable and most inter- esting observations have been published by the eminent araneologist, M. Eugene Simon, of Paris,1 which have induced me to r
. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits. Spiders. 36 AMERICAN SPIDERS AND THEIR SPINNINGWORK. M. Si- mon's Studies. far as my observations warranted, I could find nothing to justify such con- jecture, and the records examined did not seem sufficiently clear to permit an opposite opinion. Since the issue of my work, however, some remarkable and most inter- esting observations have been published by the eminent araneologist, M. Eugene Simon, of Paris,1 which have induced me to review the subject. In a paper pre- sented to the En- tomological Soci- ety of France, February, 1891, he relates and illus- trates the habits of certain so called sociable spiders representing several families, observed by him during his voyage to Venezuela, South America, during the winter and spring of 1887-'88. This sociability presented several degrees. It was sometimes temporary and limited to the period of reproduction ; sometimes permanent. In some cases the work exe- cuted was absolutely com- mon and alike for all indi- viduals of the community; in others, the common work did not exclude some por- tion of individual work. With these qualifications he proceeds to classify the so- ciable spiders of Venezuela in three categories. Epeira bandelieri, ordinarily, does not appear to differ in habits from typical Epeiras. Its web is the normal solitary one, but at the time of laying their eggs several females unite and construct in common, upon a bush, a large shell or cocoon case, of a yellow and woolly tissue, in which they proced to lay their eggs and fabricate their cocoons. (Fig. 33.) These. Fig. 33. Common incubating nest of Epeira bandelieri. Fio. 34. A single cocoon. (After Simon.) 1 Observations Biologizes sur les Arachnides, Soc. Entomol. de France, 1891. By M. Eugene Please note that these images are extracted from scanned page images that may have been digit
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