THE INTERNATIONAL SCIENTIFIC SERIES. 



ANIMAL PARASITES AND MESSMATES. 



BT 



p. / *^FVan beneden, 



PROFESSOR AT THE UNIVERSITY OF LOUVAIN, CORRESPONDENT OF THE INSTITUTE OF 



FRANCE. 



WITH EIQETY-TPREE ILLUSTRATIONS. 



NEW YOEK: 



D. APPLETON AND COMPANY, 



549 & 551 BROADWAY. 



18Y6. 



