. The Cambridge natural history. Zoology. Fig. 53. — Two "systems" from a colony of Botryllus violaceus, cZ, Common cloaca of a system ; or, branchial apertures of ascldiozooids, magnified. (After H. Milne-Edwards.) Fig. 64. — Goodsiria placenta, Herdman. A, Colony (half nat. size) ; B, section of colony showing ascldiozooids. (After Herdman, from Challenger Reports.) ing up the colonial circulation. They are also storage reservoirs for the blood, doubtless help in respiration, and are organs for the secretion of the test-matrix. Fam. 7. Polystyelidae. — Ascldiozooids not gro
. The Cambridge natural history. Zoology. Fig. 53. — Two "systems" from a colony of Botryllus violaceus, cZ, Common cloaca of a system ; or, branchial apertures of ascldiozooids, magnified. (After H. Milne-Edwards.) Fig. 64. — Goodsiria placenta, Herdman. A, Colony (half nat. size) ; B, section of colony showing ascldiozooids. (After Herdman, from Challenger Reports.) ing up the colonial circulation. They are also storage reservoirs for the blood, doubtless help in respiration, and are organs for the secretion of the test-matrix. Fam. 7. Polystyelidae. — Ascldiozooids not grouped in systems ; brandiial and atrial apertures four-lobed ; branchial sac may be folded; internal longitudinal bars present. The chief genera are—Thylacium, Carus, with the ascldiozooids projecting above the general surface of the colony; Goodsiria,, Cunningham, with the ascldiozooids completely imbedded in the investing mass (Fig. 54); and Chorizocormus, Herdman, with the ascldiozooids. 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 Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. , Limited; New York, The Macmillan Company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
