. The British Tunicata; an unfinished monograph. Sea squirts; Tunicata. 64 BRITISH TUNIOATA. (PL XXVII, figs. 6 and 7) is composed of several laminated lobules, five or six on one side and one or two 011 the other; the laminae are sharply defined and the lobules more or less rounded. The border of the anal orifice is smooth and turned back. The reproductive organs (PI. XXVII, figs. 6 and 7, PI. XXVIII, figs, o and 5, and fig. 4(3 in text) are large, wide, and somewhat irregularly-formed masses occupy- ing the usual positions, one on each side of the body; the form of the right-hand organ incli
. The British Tunicata; an unfinished monograph. Sea squirts; Tunicata. 64 BRITISH TUNIOATA. (PL XXVII, figs. 6 and 7) is composed of several laminated lobules, five or six on one side and one or two 011 the other; the laminae are sharply defined and the lobules more or less rounded. The border of the anal orifice is smooth and turned back. The reproductive organs (PI. XXVII, figs. 6 and 7, PI. XXVIII, figs, o and 5, and fig. 4(3 in text) are large, wide, and somewhat irregularly-formed masses occupy- ing the usual positions, one on each side of the body; the form of the right-hand organ inclines to oval, and lies against the rectal portion of the intestine, in front and above the loop. The male organ (fig. 47), which is composed of comparatively large, isolated, ovate casca arranged in pairs, fringes the upper margin of. FIG. 47.—Male testicles of Molgula citrina. More highly magnified. the ovarian mass ; at the lower margin near the origin of the oviducts there is another patch of male caeca. The left-hand genital mass is subtriangular with the ^ . upper and posterior slope bordered by a similar fringe of male caeca, and at the lower side, towards the oviduct, there is also a similar belt of these caeca. The oviducts are long, narrow tubes, which, turning abruptly up in front of the organ, incline towards the atrium; they are accompanied by the vas deferens, both conduits terminating at the same point; but what is peculiar is that one of the tubes, apparently the oviduct, is entire only for a short distance, and then becomes an open deep groove, and so continues to the termination. The cylindrical organ in connection with the heart is. 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 Alder, Joshua, 1792-1867; Hancock, Albany, 1806-1873; Hopkinson, John, 1844-1919; Norman, Alfred Merle, 1831-19
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Keywords: ., bookcentury1900, bookdecade1900, bookpubli, booksubjectseasquirts
