The Taenia Cucumerina Or Elliptica is the common tapeworm of cats and dogs. Is about 15 to 30 cm. long and has a head with a rostellum possessing 60 hooklets arranged in four rows. The rostellum can be protruded or retracted. The junction of the proglottides is much narrowed. Each segment has two genital pores, one on either side. The intermediary host is probably the dog louse or sometimes the flea.

Fig. 115. - Eggs of Dibothriocephalus Latus (Mosler and Peiper).

Fig. 116. - Dibothriocephalus Latus (Eichhorst).