44 



CALIFORNIA ACADEMY OF SCIENCES. [Proc. ^d Ser. 



The writer is deeply indebted to Professor W. A. Setch- 

 ell, upon whose suggestion this paper was undertaken, not 

 only for collections of material and the use of his private 

 herbarium, but more especially for his discriminating advice 

 and helpful suggestions throughout the entire work, as well 

 as for a comparison of some coast forms with specimens 

 in the herbarium of Professor W. G. Farlow. Further 

 acknowledgment is made to Professor Farlow, who kindly 

 permitted an examination of the Nitofhylla in his collection, 

 and to Mr. F. S. Collins and Dr. C. L. Anderson, both of 

 whom courteously forwarded to the writer all the Nito- 

 fhylla contained in their herbaria. Acknowledgment should 

 also be made to Mr. Collins for the specimen from which 

 the description of N. corallinarum was drawn up. To Mrs. 

 J. M. Weeks the writer is especially indebted for collections 

 which permitted a much more comprehensive account of 

 certain species, and also for the privilege of examining 

 specimens in her herbarium. The herbarium of the Uni- 

 versity of California was consulted frequently in the prepa- 

 ration of this paper. Special acknowledgment is due to 

 Professors O. P. Jenkins and G. C. Price for their courtesy 

 in extending to the writer during several seasons the privi- 

 leges of the Hopkin's Seaside Laboratory at Pacific Grove, 

 California, thus faciHtating the examination of a large 

 amount of living material, at different times in the year. 



University of California, 

 Berkeley, 



June, 1900. 



