. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 1. Ane/os/mus roseus (Nicolet), juvenile female. Abdomen with series of white spots on purple, sides greenish. (From Villarnca, Cautin Prov.; from color transparency.) the amount of endemism is surprising. But from south central and southern Chile some theridiid species have penetrated into Argentina. Prohalily, these are species that can live in the forest that form a barrier to other species, but most Anelosimus do not seem to be forest dwellers and thus have not spilled eastward, and no rep- resentative's of
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 1. Ane/os/mus roseus (Nicolet), juvenile female. Abdomen with series of white spots on purple, sides greenish. (From Villarnca, Cautin Prov.; from color transparency.) the amount of endemism is surprising. But from south central and southern Chile some theridiid species have penetrated into Argentina. Prohalily, these are species that can live in the forest that form a barrier to other species, but most Anelosimus do not seem to be forest dwellers and thus have not spilled eastward, and no rep- resentative's of th(> genera (for instance, Theridion) that one expects to be common in southern Argentina have invaded Chile. ( But south(>rn Argentine theridiids are not well known.) The Chilean spider fauna strikes the visitor as being poor in numlxT of species. Only a few species of Aran(>idae were col- lected; among the commonest in cities \\'ere ZiiiiieUa x-nofata (Clerck) and Arancus r:k>rck imported from Europe. A ZiiiiicUa x-notata in the city park of Osorno had a 6 cm long dried lizard hanging in its web, which was attached to a concrete. Figure 2. Ane/os/mus roseus (Nicolet), juvenile female. Abdomen with white band, sides purplish anteriorly, green posteriorly. telephone pole! The two common species of Arii^iopc are the cosmopolitan A. frifasciata and the tropical American A. ariicntatu. In the areas in which I collected (except near the coasts) most crevices yielded only speci- mens of Ariadna maxima (Nicolet), in a habitat one might expect to harbor Filistota, araneids, agelenids, dictynids, and an oc- casional Ariadna. Not onlv is the extreme endemism of species suiprising, but so is the green or red color of many Anelosimus species and also of some species of Araneidae. Creen is not a common color among spiders. ( Un- fortunately, the green readiK' washes out in alcohol, leaxing the preserxed speci- mens white, or white and gray.) The shade of green is va
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