87 



M. farinosa, Lamour. 



Siasconset, forming a thin white incrustation on various 



algae ; not very common. 

 M. pustulata, Lamour. 



Siasconset, on Chondrus crispus. L. L. D. 

 M. Corallinae, Crowan. 



Siasconset, on Corallina officinalis ; new to America and very 



rare. L. L. D. 



Here the Catalogue must close, with no record of the Lichenes 

 or Fungi. Mr. John Lewis Russell, a botanist eminently qual- 

 ified to report on the former, was on the island a short time 

 about 1850, and undoubtedly made note of all the species he 

 saw, but the compiler has no list of them. These two orders 

 offer an unexplored field to any who will enter it. 



CORRECTIONS AND ADDITIONS. 



Page 18. After C. viscosum add 



C. arvense, L. 

 The note applies to this plant and not to C. viscosum. 



Page 19. After PORTULACACEiE add 

 PORTULACA, Tourn. 



Page 42. For ILYSANTHUS read ILYSANTHES. 



