. Bulletin - United States National Museum. Science. ASCIDIANS OF THE PHILIPPINES—VAN NAME. 137 Sluiter (1909) describes the species to which these specimens ap- pear to belong from reefs at Nusa Laut and Banda. He describes his specimens as a dark brownish violet, a variation in color from the Philippine specimens, though not too great to render the identifi- cation improbable. POLYCITOR TOROSUS Sluiter, 1909. Plate 32, fig. 41. 1909. Polycitor torosus Sluiter, Siboga-Exped., vol. 56&, p. 18, pi. 1, fig. 19; pi. 6, fig. 3. 1909. Eudistoma torosum Haetmeyek, Bronn's Tier-reich, vol. 3, sup


. Bulletin - United States National Museum. Science. ASCIDIANS OF THE PHILIPPINES—VAN NAME. 137 Sluiter (1909) describes the species to which these specimens ap- pear to belong from reefs at Nusa Laut and Banda. He describes his specimens as a dark brownish violet, a variation in color from the Philippine specimens, though not too great to render the identifi- cation improbable. POLYCITOR TOROSUS Sluiter, 1909. Plate 32, fig. 41. 1909. Polycitor torosus Sluiter, Siboga-Exped., vol. 56&, p. 18, pi. 1, fig. 19; pi. 6, fig. 3. 1909. Eudistoma torosum Haetmeyek, Bronn's Tier-reich, vol. 3, suppl., p. 1488. The few specimens in the collection indicate a tendency of the colony to assume a capitate form, the upper surface being somewhat flat- tened and the sides nearly vertical, though con- verging a little toward the base, which is not very much less in diameter than the upper part. The largest specimen is evidently not an entire colony; its greatest diameter is about 38 mm.; its height appears to have been less than this. Test gelatinous, yellowish with a tinge of olive, semitransparent with a smooth shining surface on the upper part of the colony, though this may be slightly depressed and darker colored over the position of each zooid. The lower part of the sides of the colony may be somewhat fig. 90. — polycitor wrinkled transversely, and discolored or rough- tokosus slditeu. Zooid. X 25. ened with some adherent mud or sand. Zooids rather small, often only 2 mm. or less in length in the vio- lently contracted and distorted state in which they occur in preser- vation, the long constricted pedicel or neck connecting the thorax and abdomen being so shortened that the abdomen comes against the thorax. When even moderately extended they are, however, two or three times the above length. Branchial and atrial apertures on fairly prominent forwardly directed tubes, both 6-lobed. One or more vascular processes arise from the posterior end of the body. Mantle with numero


Size: 895px × 2792px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience