Dr. Éva Murai szerk.: Miscellanea Zoologica Hungarica 4. 1987 (Budapest, 1987)

Stifter, P.: Ilyocryptus verrucosus Daday, 1905: a junior synonym of I. spinifer Herrick, 1882 (Crustacea: Cladocera)

pressed, margins of cells are thickened with knob-like projections mostly at the points where three or four cells are contiguous. Defensive posterior spines and plumose setae are partially retained along the shell margin. The ephippium constains up to two eggs (mostly two). b) Remarks This description is based on the South American material and agrees with the brief description and figure published by SARS (1901) from Brazil. African material and material from Sri Lanka (see material examined; published by KÖRINEK (1984) and RAJA PAKSA and FERNANDO (1982) respectively) have not only the knob-like projections but rather column- or cone-like projections in the centre of the ephippium. CONCLUSIONS Ilyocryptus verrucosus Daday, 1905 is a junior synonym of I. spinifer Herrick, 1882. The sexual females of I. spinifer were used for the description. ACKNOWLEDGEMENTS I am indebted to Dr. L. FORRÔ, Hungarian Natural History Museum, Budapest, Hungary for the loan of the type material. I am also grateful to prof. C.H. FERNANDO, University of Waterloo, Canada for the collection of specimens from Sri Lanka, to Dr. V. KÖRINEK, Charles University, Prague for the possibility to study the material from his collection. REFERENCES BRANDLOVÁ, J., BRANDL, Z. and FERNANDO, C.H. (1972): The Cladocera of Ontario with remarks on some species and distribution. - Can. J. Zool., jjO: 1373- 1403. CHIRKOVA, Z.N. and MAKRUSHIN, A. V. (1983): On the structure of ephippium in Ilyocryptus vitali (Crustacea, Cladocera). (In Russian) - Zool. Zh., 62: 799-801. DADAY, E. (190 5): Untersuchungen über die SüsswasserMikrofauna Paraguays. - Zoologica, 18 (44): 1-374. HERRICK, C.L. (1882): Mud-inhabiting Crustacea. - Bull. Lab. Denison Univ. 1882: 37-42. KÖRINEK, V. (1984): Cladocera. In: SYMOENS, J. J. (ed. ): Hydrobiological survey of the Lake Bangweulu Luapula river basin. - Cercle Hydrobiol. Bruxelles, _13/2: 1-117. RAJAPAKSA, R. and FERNANDO, C.H. (1982): The Cladocera of Sri Lanka (Ceylon), with remarks on some species. - Hydrobiologia, 9_4: 49-69. SARS, G.O. (1901): Contributions to the knowledge of the freshwater Entomostraca of South America. I. Cladocera, - Arch. Math. Naturv., 23: 40-42. SMIRNOV, N.N. (1976): Macrothricidae and Moinidae fauna of the World, (in Russian). Fauna of U. S. S. R. Crustacea, 1/3:1-236. STINGELIN, T. (1913): Voyage d'exploration scientifique en Colombii. Cladocera. - Mém. Soc. neuchat. Sei. nat., 5: 618-619. Author's address: Dr. Pavel STIFTER Okresni muzeum prirodovè'dné oddèleni CS-294 71 Benàtky nad Jizerou CZECHOSLOVAKIA