374
ELVEZIO GHIRARDELLI
Ritter-Zahony, R. von (1911).
In ‘‘ Das Tierreich ”, Lief. 29,
pp. 1-35.
Rizzoli, C. (1956). Ricerca sulla eomposizione aminoacidica della cuticola di
Ascaris. Boll. SOC. ital. Bi ol . sper. 32(6), 357-360.
Roggen, D. R., Raski, D. J. and Jones, N. 0. (1966). Cilia in nematode sensory
organs. Science, N . Y . 152, 515--516.
Ross, M. M. R. (1967). Modified cilia in sensory organs of juvenile stages of a
parasitic nematode. Science, N . Y . 156, 1494-1495.
Russell, F. S. (1932a). On the biology of Xagitta. The breeding and growth of
Sagitta elegans Verrill in the Plymouth area 1930-31. J . mar. Biol. Ass.
Russell, F. S. (193213). On the biology of Sagitta. 11. The breeding and growth of
Sagitta setosa J . Muller in the Plymouth area 1930-31, with a comparison
with that of X. elegans Verrill. J . mar. Biol. Ass. U.K. l8(1), 147-160.
Russell, F. S. (1933). On ths biology of Sagitta. IV. Observations on the natural
history of Sagitta elegans Verrill and Sagitta setosa J. Muller in the Plymouth
area. J . mar. Bi ol . Ass. U.K. 18(2), 555-574.
Russell, F. S. (1935). On the value of certain plankton animals as indicators of
water movements in the English Channel and North Sea. J . mar. Biol. Ass.
U.K. 20(2), 309-332.
Russell, F. S. (1939). Hydrographical and biological conditions in the North Sea
as indicated by plankton organisms. J . Cons, perm. int. Explor. Mer 14(2),
Chaetognathi.
U.K. 18(1), 131-146.
17 1-1 92.
Salfi, M. (1965). “ Zoologia ”, 2nd ed., pp. 805-807. Vallardi, Milano.
Sanzo, L. (1937). Colonia pelagica di uova di Chetognati (Spudella draco Krohn).
Scaccini, A. and Ghirardelli, E. (1941). I Chetognati del mare Adriatic0 presso
Scharrer, E. (1965). The fine structure of the retrocerebral organ of Xagitta
Schmidt, J. W. (1951). Polarisationsoptisehe untersuchungen an Sagitta setosa
Schmidt, J . W. (1952). Polarisationsoptische untersuchungen an Sagitta setosa
Schneider, A. (1586). “ Monographie der Nematoden ”, pp. 1-357. Berlin.
Singarajah, K. V. (1966). Pressure sensitivity of the chaetognath Xagitta setosa.
Comp. Biochem. Physiol. 19(2), 475-478.
Slabber, M. (1769-78). Natuurkundige Verlustigingen behelzende microscopise
Waarnemingen van in-en uitlandse Water- en Land-Dieren-Haarlem.
Stevens, N. M. (1903). On the ovogenesis and spermatogenesis of Sagitta bipunctutu. 2001. Jb. Anat. 18, 227-240.
Stevens, N. M. (1905). Further studies on the ovogenesis of Sagitta. 2001. Jb
Anat. 21, 243-252.
Stevens, N. M. (1910). Further studies on reproduction in Sagitta. J . Morph. 21,
279-319.
Stone, J. H. (1966). The distribution and fecundity of Sagitta enflata Grassi in the
Agulhas Current. J . Anim. Ecol. 35(3), 533-541.
Tchindonova, J. G. (1955). Chaetognatha of the Kurile Kamehatka trench.
Trudy Inst. Okeanol. 12, 298-310. (In Russian.)
Teodoro, G. (1923). Sulla presenza nella Laguna Veneta della Sagitta setosa
J. Muller. Atti A c c d . scient. weneto-trent.-istriana 14, 46-47.
Mem. R. Cam. talassogr. ital. 239, 3-6.
Rovigno. Note Rowigno 2(22), 3-16.
(Chaetognatha). L q e Sciences, 4, 923-926.
und Sagitta hexaptera. 2. Zellforsch. 35, 476-486.
und Sagitta hexaptera. Z . Zellforsch. 36, 552-555.
ELVEZIO GHIRARDELLI
Ritter-Zahony, R. von (1911).
In ‘‘ Das Tierreich ”, Lief. 29,
pp. 1-35.
Rizzoli, C. (1956). Ricerca sulla eomposizione aminoacidica della cuticola di
Ascaris. Boll. SOC. ital. Bi ol . sper. 32(6), 357-360.
Roggen, D. R., Raski, D. J. and Jones, N. 0. (1966). Cilia in nematode sensory
organs. Science, N . Y . 152, 515--516.
Ross, M. M. R. (1967). Modified cilia in sensory organs of juvenile stages of a
parasitic nematode. Science, N . Y . 156, 1494-1495.
Russell, F. S. (1932a). On the biology of Xagitta. The breeding and growth of
Sagitta elegans Verrill in the Plymouth area 1930-31. J . mar. Biol. Ass.
Russell, F. S. (193213). On the biology of Sagitta. 11. The breeding and growth of
Sagitta setosa J . Muller in the Plymouth area 1930-31, with a comparison
with that of X. elegans Verrill. J . mar. Biol. Ass. U.K. l8(1), 147-160.
Russell, F. S. (1933). On ths biology of Sagitta. IV. Observations on the natural
history of Sagitta elegans Verrill and Sagitta setosa J. Muller in the Plymouth
area. J . mar. Bi ol . Ass. U.K. 18(2), 555-574.
Russell, F. S. (1935). On the value of certain plankton animals as indicators of
water movements in the English Channel and North Sea. J . mar. Biol. Ass.
U.K. 20(2), 309-332.
Russell, F. S. (1939). Hydrographical and biological conditions in the North Sea
as indicated by plankton organisms. J . Cons, perm. int. Explor. Mer 14(2),
Chaetognathi.
U.K. 18(1), 131-146.
17 1-1 92.
Salfi, M. (1965). “ Zoologia ”, 2nd ed., pp. 805-807. Vallardi, Milano.
Sanzo, L. (1937). Colonia pelagica di uova di Chetognati (Spudella draco Krohn).
Scaccini, A. and Ghirardelli, E. (1941). I Chetognati del mare Adriatic0 presso
Scharrer, E. (1965). The fine structure of the retrocerebral organ of Xagitta
Schmidt, J. W. (1951). Polarisationsoptisehe untersuchungen an Sagitta setosa
Schmidt, J . W. (1952). Polarisationsoptische untersuchungen an Sagitta setosa
Schneider, A. (1586). “ Monographie der Nematoden ”, pp. 1-357. Berlin.
Singarajah, K. V. (1966). Pressure sensitivity of the chaetognath Xagitta setosa.
Comp. Biochem. Physiol. 19(2), 475-478.
Slabber, M. (1769-78). Natuurkundige Verlustigingen behelzende microscopise
Waarnemingen van in-en uitlandse Water- en Land-Dieren-Haarlem.
Stevens, N. M. (1903). On the ovogenesis and spermatogenesis of Sagitta bipunctutu. 2001. Jb. Anat. 18, 227-240.
Stevens, N. M. (1905). Further studies on the ovogenesis of Sagitta. 2001. Jb
Anat. 21, 243-252.
Stevens, N. M. (1910). Further studies on reproduction in Sagitta. J . Morph. 21,
279-319.
Stone, J. H. (1966). The distribution and fecundity of Sagitta enflata Grassi in the
Agulhas Current. J . Anim. Ecol. 35(3), 533-541.
Tchindonova, J. G. (1955). Chaetognatha of the Kurile Kamehatka trench.
Trudy Inst. Okeanol. 12, 298-310. (In Russian.)
Teodoro, G. (1923). Sulla presenza nella Laguna Veneta della Sagitta setosa
J. Muller. Atti A c c d . scient. weneto-trent.-istriana 14, 46-47.
Mem. R. Cam. talassogr. ital. 239, 3-6.
Rovigno. Note Rowigno 2(22), 3-16.
(Chaetognatha). L q e Sciences, 4, 923-926.
und Sagitta hexaptera. 2. Zellforsch. 35, 476-486.
und Sagitta hexaptera. Z . Zellforsch. 36, 552-555.