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Quarterly Journal of Microscopical Science, Vol s2-85, 177-190, Copyright © 1945 by Company of Biologists

Memoirs: Studies on the Structure, Development, and Physiology of the Neptaridia of Oligochaeta Part V. The Enteronephric System in Megascolex Ceylonicus and M. Sarasinorum, with Remarks on the Phagocytic Organs in Megascolex Templetonianus

KARM NARAYAN BAHL B.Sc. (Panj.), D.Phil., D.Sc. (Oxon.)1

1 Professor of Zoology, University of Lucknow, India

1. With the discovery of the enteronephric type of nephridial system in the earthworms Megascolex ceylonicus and Megascolex sarasinorum, this type of nephridial system is now known to occur in the following earthworms:

1. Pheretima--all species.

2. Lampito mauritii and Lampito trilobatus.

3. Woodwardiella bahli.

4. Tonoscolex--all species.

5. Megascolex: (a) Megascolex cochinensis. (b) Megascolex konkanensis. (c) Megascolex ceylonicus. (d) Megascolex sarasinorum.

Of these earthworms the best developed system is found in Pheretima, while the most primitive occurs in Megascolex ceylonicus and Megascolex sarasinorum.

2. Megascolex templetonianus does not possess the enteronephric type of nephridial system.

3. Like Acanthodrilus falclandicus, Megascolex templetonianus possesses a pair of well developed ventral phagocytic organs in each segment behind segment XIX, one on each side of the ventral nerve-cord.






© The Company of Biologists Ltd 1945