HOWE 



PLATE 1 



FIG. 1. Lithophyllum homogcneum, n. sp. Photograph of all of the embedded material, from 

 above head of Governor's Bay, St. Bartholomew (T. W. Vaughan, Station No. 6923) . 

 Natural size. 



FIG. 2. Lithothamnium concretum, n. sp.. Photograph of nearly free specimens from Hodge's 

 Bluff, Antigua (T. W. Vaughan, Station No. 6862). Natural size. 



