. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. . Fio. 401.—Heart and vascular trunks of Lycota, in lateral and dorsal view (after Claparede).. P, Lungs ; C, heart; Ao, aorta; O, eyes. Fio. 402.—Sexuil organs cf a Tegenaria (Fhiloica) domesf icn, with the abdomen in outline (after Bertkau). T, Testis ; Vd vas deferens ; St. stigma. The vascular system is not less highly developed (fig. 401). The blood flows from the pulsating dorsal vessel placed in the abdomen, through an anterior aorta into the ce- phalo-thorax, and thence into lateral
. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. . Fio. 401.—Heart and vascular trunks of Lycota, in lateral and dorsal view (after Claparede).. P, Lungs ; C, heart; Ao, aorta; O, eyes. Fio. 402.—Sexuil organs cf a Tegenaria (Fhiloica) domesf icn, with the abdomen in outline (after Bertkau). T, Testis ; Vd vas deferens ; St. stigma. The vascular system is not less highly developed (fig. 401). The blood flows from the pulsating dorsal vessel placed in the abdomen, through an anterior aorta into the ce- phalo-thorax, and thence into lateral arte- ries, supplying the legs, jaws, brain, and eyes. The blood returns from these organs into the abdomen, bathes the so- called lungs, which are composed of numerous flattened tubes, and then re- turns to the dorsal vessel through three pairs of lateral slits. The ovaries (fig. 397) are two racemose glands surrounded by the liver ; the short oviducts unite to form a single vagina, which is usually connected with two long receptacula seminis and opens on the ventral surface of the anterior part of the abdomen between the anterior stigmata. The testes consist of two long coiled canals with a common terminal duct, which likewise opens at the base of the abdomen (fig. 402).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Claus, Carl, 1835-1899; Sedgwick, Adam, 1854-1913; Sinclair, F. G. (Frederick Granville), b. 1858. London, Swan Sonnenschein & co.
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