FIRST LECTURE. 77 



derenij potui tamen ea propter cum iis non consen- 

 tire, quoniam uti in multis veris opinionibus, ita 

 etiain in erroneis Linnaeum nimis presso pede se- 

 qiii videbantur, quapropter exiiule illos optimos 

 viros, Linuaei auctoritatem etiam in hoc propriae 

 experientiae anteposuisse verebar. Non nego duo- 

 bus tubercuiis instructas Taeniarum species, quae 

 tamen non ita, uti Linnaeus posuit, mediam super- 

 ficiem occupant, verum potius ad latera, in utroque 

 nimirum unum, coUocata sunt. 



" Possit ne igitur quadam observantis festina- 

 tione factum esse, ut ex aliquo exemplo, qui vel 

 casu uniiis lateris tuberculorum series abrupta erat, 

 illad soiitariura tuberculum, quod in aliis duplex et 

 oppositum observaverat, in mediam superficiera 

 eollocaret, novamque speciem Iritam, videlicet oscu- 

 lis solitariis, inde conderct ? Qaae mea qualis cum- 

 que conjectura eifecit ut latam cum vulgari con- 

 jungens, banc tantum ceu unicam verara speci- 

 em describendara esse existimavera.'' The same 

 GoGZP, Versucheiner Naturgeschichte der Ein- 

 geweidewiirraer, etc., p. 296, affrms, that he has 

 no knowledge of this common or membranous 

 taenia. 



Supported by the authority of Linnaeus and of 

 PallaSy he admits it into the class of human taeniae 

 published in his work. It is proved then that the 

 taenia tenella, sec § Xill, J\'*ute 35, and the taenia 

 vulgaris pertain to the flat taenia. There are but 

 two real species which can be regarded as distinct 



