ZOOPHYTOLOGY. 145 



collected in Madeira by Mr. J. Y. Johnson. As I am unable 

 to discover any satisfactory specific distinction between the 

 northern and southern forms, I am induced to consider them 

 identical.* 



Other species belonging to the family Membraniporida, 

 which occur in Mr. Barlee's collection, are — 



1. Membranipora Rosseli, Savign. 



2. „ Pouilletii, Savign. 



3. „ spinifera, Alder. 



4. Alymloia Alderi, Busk, which appears to be very abundant. 



* In the paper read at the meeting of the British Association, this species 

 was termed Alysidota conferta. 



{To be continued- ) 



