. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 1188 TUNICATA. simple (fig. 778). Dendrodoa closely agrees with Cynthia in its branchial reticulations and its digestive apparatus; but, as Mr. Mac Leay has observed, of the two ovaries possessed by Cynthia, only one, and that the left, is found in Dendrodoa, whilst the right ovary alone is present in Pandocia. Genus Chelyosoma, Broderip and Sowerby. — Body depressed, oblong, fixed, sessile ; test coriaceous, its upper surface consisting of eight somewhat horny, angular plates; ori- fices small, prominent, perforating th
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 1188 TUNICATA. simple (fig. 778). Dendrodoa closely agrees with Cynthia in its branchial reticulations and its digestive apparatus; but, as Mr. Mac Leay has observed, of the two ovaries possessed by Cynthia, only one, and that the left, is found in Dendrodoa, whilst the right ovary alone is present in Pandocia. Genus Chelyosoma, Broderip and Sowerby. — Body depressed, oblong, fixed, sessile ; test coriaceous, its upper surface consisting of eight somewhat horny, angular plates; ori- fices small, prominent, perforating the plated surface, each surrounded by six triangular valvules (Jig. 767.) ; branchiae plicated ; ten- tacles simple. Fig. Clielyosoma Macleayanum. (After Broderip and Sowerby.) a, branchial orifice; b, anal orifice; c, coriaceous envelope of the sides; d, stone to which the animal is fixed. To the Ascidiada; we may provisionally join the following obscure form, occurring on the coasts of South America: Genus Fodia, Bosc. — Body oval, mammil- lated, divided throughout its length by a vertical partition, which contains the stomach, into two unequal tubes open at each end by an orifice, the superior aperture rather depressed and ir- regularly toothed, the inferior bordered by a circular collar forming a sucker, and serving to attach the animal to extraneous objects. Genus Boltcnia, Savigny ; synonym, Ascidia, Auct. — Body more or less globular, fixed, pe- dunculated, attached sometimes to the stem of another individual; test coriaceous; ori- fices lateral, and each cleft into four rays ; branchial sac longitudinally plicated ; sur- mounted by a circle of compound tentacula. Genus Cystingia, MacLeay. — Body glo- bular, fixed, pedunculated ; test subcoriaceous; branchial orifice quadrifid, lateral; anal irre- gular, terminal; branchial sac plicated; tenta- cula compound. Genus Bipapillaria, Lamarck. — Body more or less globular, free, pedunculated ; test mem- branous
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