LKSTKKKTAl..: I'AkASITKS (IK SKllMACK 'ITNA 



Blair, Department of Zoology, University of Canter- 

 bury. N.Z.; Rod Bray, British Museum (N.II.). Lon- 

 don, U.K.; and Arlene Jones, Commonwealth Insti- 

 tute of Parasitology, St. Albans, U.K. For help with 

 the dissections we thank C. Boel, K. Couper, B. M. 

 Heath, M. K. Jones, M. S. Kennedy, G. G. Lane, and 

 A. G. West. K. MacKenzie, D.A.F., Scotland, kindly 

 reviewed an earlier draft of the manuscript. 



The project was supported by a grant to H. M. D. 

 Hoyte, Department of Parasitology, University of 

 Queensland, from the Nuffield Foundation, U.K. 



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