80 NOTES TO THE 



with a truncated extremity in the lateral part to- 

 ward the head. 



(66) PI. I, fig. xi. 



(Hr) PI. I, fig. X. 



(68) As they are seen in aged taeniae. See 

 Vallisnerif O^ere Fisico-mediclie, T. 1, tav. 19, jp. 

 177. 



(69) See § IV, Goeze, Versuclieiner Jfatiir. 

 der Eingeiceidswiirmerf etc., p. 278, remains in 

 some measure in doubt on the vague and incon- 

 stant appearances of the articulations of this taenia, 

 as he has subdivided his taenia cucurbitina into 

 two species ; he called the first taenia cucurbitina 

 grandis saginata ; and the second, taenia cucur- 

 hitinaf plana, pellucida. 



After a deliberate examination of these two 

 taeniae, for they are preserved in the museum of 

 natural history of the university of Pavia, w ith the 

 collection of other worms made by this illustrious 

 naturalist ; I believe the first species to be a tae- 

 nia cucurbitina more advanced in age and better 

 fed than the second. 



(70) See ^ VIII. The articulations of the wi- 

 dest extremity of these taeniae may be easily sepa- 

 rated from each other. 



It was from this circumstance thati)/ow2S nam- 

 ed them taeniae articulos demittentes. 



According to Block, this separation has been 

 the source of numberless errors. The Arabian 

 physicians, and after them several moderns, among 

 whom we find Vallisneri and JRosenstein, recog- 



