328 DR. A. A. W. HUBllECHT, 



that the protrusible pharynx corresponds very well to the figure 

 \yhich Tullberg gives to this region. 



Pinally, I suggested that the animals with which Kowalevsky 

 and Marion have been experimenting at Marseilles must be 

 referred to Proneome7iia rather than to Neomenia, especially 

 because the results of their careful anatomy fully confirm the 

 different statements made in the foregoing pages concerning the 

 first-named genus.-^ 



1 Simultaneously with this proof-sheet I receive a letter from Professor 

 A. F. ]\fario?i, at Marseilles, ia which he authorises me to say that he has 

 changed his mind with respect to the Marseilles specimens, in so far as he 

 agrees with me in regarding the genera Neomenia and Froneomenia as per- 

 fectly distinct, and his specimens as certainly belonging to the latter genus. 

 This being the case we may henceforth declare Froneomenia to be in the pos- 

 session of a posterior commissure of the lateral nerve-trunks, and the point 

 of interrogation in fig. 1, on p. 221, may safely disappear; as Professor 

 Marion moreover writes to tell me that one of his Marseilles species of 

 Pkoneomenia is in the possession of such a connnissure, entirely corre- 

 sponding to that of the other Amphineura. 



