Studies on some developmental stages in the life cycle of Pygidiopsis genata Looss. 1907 (Trematoda: Heterophidae) from Egypt.

Pleurolophocercous cercariae of Pygidiopss genata were obtained from naturally infected Melania tuberculate and allowed.to encyst 'in clean Gambusia affinis and Tilapia nilotica under laboratory conditions. Metacercariae dissected from those fish Request for reprints Research Publication Division NAMRU-3 C/O American Embassy Cairo, Egypt. This work was partially supported 'by the Naval Medical Re4earch and.Development Command, NMC, NCR, Betheosa, Maryland, Work unit No. MR041.05.01.0053. The opiions and assertions contained herein are the private o:Aes of the authors and are riot to be construed as official or as reflecting the views of the Department of the Navy or 'the naval service at large.