TBGTOGINCHIOM a 75 tee eee te None tee Bene oo oasis o cee ho Ghee 819 Methodah.ktecnico.sea act se is eee Ce.EB dk ds i ie ee oe re 820 fhematare-of-the Scolex polymorphus!%4.0.2)..¢04.. 02 04k soa oe ee 821 The normal occurrence of parasites in sand sharks taken at random....... 827 The infection of sand sharks with the Scolex polymorphus.................
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Winterton C. Curtis (1911) studied this question.
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