BOTHRIOCEPHALL 



SPECIAL PART. 



The Cestode worms occur in man either only in the mature 

 state, and then in the human intestine (Bothriocephalus latus ; 

 Tcenia mediocanellata ; T&nia nana ; and if the Tcenia of the 

 Hottentots, mentioned under 3, is not a mere variety of Tcenia 

 mediocanellata, probably this also) ; or only in the larva or scolex 

 state (Cysticercus visceralis autorum seu tenuicollis, according to 

 Eschricht ; Echinococcus veterinorum seu scolicipariens and 

 E. hominis seu altricipariens) ; or lastly, in all known stages of 

 development (Taenia solium and Cysticercus celluloses). 



First Order Bothriocephali = Dibothria. 



Cestoidea 2 osculis suctoriis aut 2 foveis marginalibus, oblongis 

 aut longitudinalibusoppositisinstructa. Capite subtetragono } depresso, 

 arliculato plerumque, inermi. Pori genitales omnium articulorum 

 in linea mediana animalis et in ejus superficie abdominali siti. 

 Scolices extra tubum intestinalem in cystidibus peculiaribus ad 

 vermium platycercorum modum, aut in tubo intestinali animalium 

 minorum aquaticorum statu immaturo viventes ; Strobilse in tubo 

 intestinali animalium aquaticorum rapacium, avium maritimarum et 

 mammalium viventes ; Proglottides verae interdum absunt, interdum 

 adsunt, stepissime in longa articulorum serie conjunct^ dehiscentes. 

 Embryones sex hamulis armati ; ovulorum testae s&pissime 

 coloratce. 



Of this division, which is particularly abundantly represented 

 in predaceous fishes, and more sparingly in piscivorous birds, 

 especially the marine Raptores, examples occur in but few 

 mammalia. Thus Creplin once saw two young, small Bothrio- 

 cephali in the intestine of a cat in Greifswald ; Natterer found 

 them in Brazil in Felis malivora and Procyon lotor ; Fischer in 

 Phoca monachus ; and Schilling in Phocafcetida. Of the terrestrial 

 mammalia inhabiting inland situations, only man harbours 

 Bothriocephali. 



