. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 160 Bulletin Museum of Comparative Zoology, Vol. 141, No. 4. Araneus corticari us Araneus washingtoni Map 5. Distribution of Aroneus corticari'us (Emerton) and Aroneus wos/iingfon/ sp. n. metatarsus, mm; tarsus, 0.(S mm. Second patella and tibia, mm; third, mm; fourth, mm. Variation. Total length of females varied between mm, the carapace mm long and mm wide. Total length of males, mm. The shape of the abdomen is variable. Diagnosis. The shape of the abdomen, with the hu
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 160 Bulletin Museum of Comparative Zoology, Vol. 141, No. 4. Araneus corticari us Araneus washingtoni Map 5. Distribution of Aroneus corticari'us (Emerton) and Aroneus wos/iingfon/ sp. n. metatarsus, mm; tarsus, 0.(S mm. Second patella and tibia, mm; third, mm; fourth, mm. Variation. Total length of females varied between mm, the carapace mm long and mm wide. Total length of males, mm. The shape of the abdomen is variable. Diagnosis. The shape of the abdomen, with the humps projecting toward the sides, is not seen in any other large North American Araneus including A. washing- toni. The epigynum of the female (Figs. 114-117) resembles that of A. marmoreus, but the epigynal lamellae are smaller, only rarely visible in ventral view, and the median field behind the scape between the rims is wider than in A. marmoreus. The scape usually breaks off during mating. The embolus shape (Figs. 119, 121, 122) resembles that of A. marmoreus, but the enormous conductor, its length half that of the bulb in ventral view (Fig. 120), and the longer median apophysis (Figs. 119, 120) separate the species from A. marmoreus and A. ivashingtoni. Halrits. Kaston (1948) reports having collected A. corticarius in moist meadows and woods. It has been collected from a cranberry bog in Massachusetts, from a swamp in Wisconsin, swept from a hem- lock seedling (Tsuga canadensis) in a swamp in Pennsylvania. Distribution. Araneus corticarius is found from Alaska to New England. Its known range matches the range of black spiiice (Picea mariana) and tamarack {Larix lari- cina), both bog inhabitants. The southern- most records are Ice Mine, Potter Co., Pennsylvania, and Beverly Shores, Porter Co., Indiana; the northernmost, Rampart House, Yukon Terr. (Map 5). Araneus Washington} sp. n. Figures 123-130; Map 5 Holotype. Male from 3 miles up road, Mt. Washington [no date] (J. H. Em
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