NOTES ON PARASITES. 83 



at present, but it must not be forgotten that others have 

 seen at least one transverse commissure in each proglottis. 

 Towards the end of his paper on the " Valves in the Ex- 

 cretory Vessels of Taenias " Kohler^ describes in Taenia 

 expansa a transverse nerve commissure connecting the 

 lateral nerve near the posterior end of each proglottis. 

 This commissure corresponds in position with the dorsal 

 one in Moniezia. 



Riehm and Zschokke have also described nerves passing 

 transversely from the lateral cord, near the posterior end 

 of the proglottis, towards the interior, but they failed to 

 trace them right across, and in fact in the species they 

 worked at the commissure may be incomplete. 



Arthur E. Shipley. 

 ^ Zeitsch. iviss. ZooL, vol. Ivii., 1894, p. 385. 



