12 INTRODUCTION 



tomy/ London and Boston, 1854. Thomson, A., " Entozoa/' in 

 the art. " Ovum/' in Todd's ' Cyclop, of Anat. and Physiol./ 

 London, 1859. Van Beneden, P. J., ( Memoire sur les Vers 

 Intestineaux/ Paris, 1858. Idem, " Les Vers Cestoides," 

 < Mem. de 1'Acad. Koy./ Brussels, 1850. Verrill, A. E., "The 

 External and Internal Parasites of Man and the Domestic 

 Animals," ' Rep. of Board of Agriculture/ Connecticut, U.S., 

 1870. Von Baer, JL. E., ' Observations on Entozoa / in an 

 analytical notice of his article " Beitrage zur Kentniss der 

 niedern Thiere," from ' Nova Acta Nat. Cur./ torn, xiii, in the 

 < Zool. Journ/ vol. iv, p. 250, 1828-29. Wagener, G. R., 'Bei- 

 trage zur Entwicklungsgeschichte der Eingeweidewiirmer/ 

 Haarlem, 1857. Weinland, D. F., ' An Essay on the Tapeworms 

 of Man/ Cambridge, U.S., 1858. 



