. The British Tunicata; an unfinished monograph. Sea squirts; Tunicata. 56 BRITISH TUNICATA. is not displayed externally; the anal margin is fringed with six or seven large, obtuse, reflected pro- cesses. The reproductive organs (fig. 43) are large, elongated, crescentic bodies, each of which is composed externally of an irregular double row of white or yellowish ovigerous lobes; and on the inner surface there are three or four large, irregularly-rounded, white bodies composing the male organ; the oviducts are short and wide, and issue from the ventral extremity of the organ in the direction o
. The British Tunicata; an unfinished monograph. Sea squirts; Tunicata. 56 BRITISH TUNICATA. is not displayed externally; the anal margin is fringed with six or seven large, obtuse, reflected pro- cesses. The reproductive organs (fig. 43) are large, elongated, crescentic bodies, each of which is composed externally of an irregular double row of white or yellowish ovigerous lobes; and on the inner surface there are three or four large, irregularly-rounded, white bodies composing the male organ; the oviducts are short and wide, and issue from the ventral extremity of the organ in the direction of the atrium; the vas deferens is short and much constricted, adheres to the inner surface of the ovary, and opens near the origin of the oviduct. In one of the two specimens examined the right-hand 0( v. ts. v. v. d. FIG. 43. — Reproductive organs of Molgula siphonata. Magnified, r. Ovary. od. Oviduct, ts. Testis. v. d. Vas deferens. organ had both the ovarian and spermatic ducts with two nipple-like outlets, one probably being ovarian, the other spermatic ; it may be that this is the normal condition of the right-hand genital mass. The cardiac cylinder is wide, decidedly arched, and wrell rounded at the extremities. 7. Molgula socialis Alder. (PL XXVII, figs. 1 and 2 ; PI. XXVIII, figs. 1 and 2 ; PI. XL VIII, fig. 2 ; and fig. 44 in text.) Molgula socialis ALDER in Ann. Nat. Hist. (3) XI [1863], p! 159. Boily ovate, covered with fine sand, adhering by a. 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, 1831-1918; Embleton, Dennis, 1810-1900. London, Printed for the Ray society
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Keywords: ., bookcentury1900, bookdecade1900, bookpubli, booksubjectseasquirts
