Archive image from page 99 of American spiders and their spinning. 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 CUbiodiversity1121211-9810 Year: 1889 ( Cocoon string of a California Cyrtanicline, seen from two sides. Natural size. Cyrtar- achne Cocoons third larger than the other. 1 In the former the stalk or neck is of uniform thickjiess; in the latter it is twice as thic'k at the mouth as at the bowl. (Fig. 81.) The cocoon is lashed at the base of the bowl to a twig by a number
Archive image from page 99 of American spiders and their spinning. 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 CUbiodiversity1121211-9810 Year: 1889 ( Cocoon string of a California Cyrtanicline, seen from two sides. Natural size. Cyrtar- achne Cocoons third larger than the other. 1 In the former the stalk or neck is of uniform thickjiess; in the latter it is twice as thic'k at the mouth as at the bowl. (Fig. 81.) The cocoon is lashed at the base of the bowl to a twig by a number of silken threads, whicli are attached to one side, carried quite around the twig, and simi- larly fastened to the opposite side. The entire lower half of the bowl is thus covered by the attached wrappings, wliich are drawn so tightly that the flask sits quite firmly upon the twig. At the op- posite end the cocoon is stayed by lines that pass from the tip of the stalk to the snare of the spider or other sujjport. The attaciiments of these guys are shown in Fig. 81, which is drawn twice natural size. In the Camden cocoon (Fig. 82, natural size), the lashings are of a ' No. 1, collected by Mr. Isiuic Martindale, Camden, N. .1.; length, 19 inin.; howl, 10 mm. long, 9 mm. wide; stidk, i) mm. long, 3 mm. wide. No. 2, collected by Dr. (icorge Marx, Washington, 1). ('.; length, 12 mm.; bowl, G mm. long, .') mm. wide ; stalk, (i mm. long, to :i mm. wide. Cocoon of Cyrtarachne cornigera, lashed to a twig. X 2.
Size: 1293px × 1547px
Photo credit: © Bookive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1880, 1889, _philadelphia_the_author_academy_of_natural_scienc, _philadelphia_the_author_academy_of_natural_science_of_philadelphia, archive, book, bookauthor, bookdecade, bookpublisher, booksubject, bookyear, drawing, historical, history, illustration, image, mccook_henry_c_henry_christopher_1837_1911, page, picture, print, reference, spiders, vintage
