world catalogue and bibliography of the recent pycnogonida

Rasmussen, E. (1973): Systematics and ecology of the Isefjord
marine fauna (Denmark). - Ophelia, 11: 1-507. [Pycnogonids
pp. 224-225]
Rathbun, R. (1881): The littoral marine fauna of Provincetown,
Cape Cod. - Proc. U.S. Natn. Mus., 3: 116-133.
Rathke, J. (1799): Entomologiske Jagttagelser. - Skr.
Naturhist.-Selsk., Kjøbenhavn, 5 (1) (4): 191-207.
Redmond, J.R. & C.D. Swanson (1968): Preliminary studies of the
physiology of the Pycnogonida. - Antarct. J. U.S., 3 (4):
130-131.
Reimer, A.A. (1976): Description of a Tetraclita stalactifera
panamensis community on a rocky intertidal Pacific shore
of Panama. - Mar. Biol., 35 (3): 225-238.
Ribeiro, M.A.G., P. de Alcantara-Filho, F.M. Fantinato & L.R.
Tommasi (1982): Sobre a occorencia de Pantopoda na regiao
da Baia de Santos, Sao Paulo (Brasil). - Dusenia,
Curitiba, Brasil, 13 (1): 37-40.
Richards, P.R. (1976): Aspects of the biology of polar
pycnogonids. D.Phil. Thesis, Council Natn. Acad. Awards,
Lutton College.
Richards, P.R. & W.G. Fry (1978): Pycnogonid digestion: A study
of polar forms. - Zool. J. Linn. Soc. Lond., 63 (1-2): 75-
97. [alimentary system]
Richters, R. (1912): Eine Pantopodenlarve von Gabelsflach
(Kieler Förde). - Zool. Jb., Suppl. 15 (1): 45-50, 1 pl.
Richter, S. (1982): Zur Ultrastruktur der seitlichen
Sinnensorgane am Augenhügel von Anoplodactylus pygmaeus
(Pycnogonida). - Helgol. Wiss. Meeresunters., 35: 465-478.
Ricketts, E.F. & J. Calvin (1939): Between Pacific Tides. 1st.
ed.: i-xxii, 1-320; Stanford Univ. Press.
Riedl, R. (1966): Pantopoda. In: Biologie der Meereshöhlen.
Topographie, Faunistik und Ökologie eines unterseeischen
Lebensraumes. Eine Monographie: 173; Hamburg & Berlin: P.
Parey.
Riedl, R. (1983): Klasse Pantopoda (Asselspinnen). In: Fauna
und Flora des Mittelmeeres: 542-546; Hamburg & Berlin: P.
Parey.
Roberts, D. (1981): Pycnogonids from Strangford Lough, Northern
Ireland. - Ir. Nat. J., 20 (5): 189-192.
-84-