276 DAWSON 



20. Hypothallium cells 15 to 100 ix long; tetrasporangial con- 



ceptacles over 150 /x in inside diameter 21 



21 Tetrasporangial conceptacles 200 to 350 jx in inside diameter; 

 epithallium cells rectangular, periclinally flattened; plants 



growing on various algae D. dispar (Foslie) Foslie ( 1909) 



= Lithophyllum tmnidulum f. dispar Foslie (1907a) Type 

 locality: California, U.S.A. 



21. Tetrasporangial conceptacles 150 to 200 /x in inside diameter; 

 epithallium cells more or less triangular, not appreciably flat- 

 tened periclinally; plants usually growing on Corallina .... 

 D. corallinae (Crouan et Crouan) Foslie ex Bc^rgesen (1902) 

 = Melobesia corallinae Crouan et Crouan (1867) Type lo- 

 cality : France 



LITERATURE CITED 



B^iRGESEN, F. 



1902. The Marine Algae of the Faeroes. In Botany of the Faeroes. Copen- 

 hagen. II: 339-532, text-figs. 51-110. 



Crouan, P. L. et H. M. Crouan 



1867. Florule du Finistere. x -f 262 pp., 32 pis. Paris, Brest. 



Dawson, E. Y. 



1944. The Marine Algae of the Gulf of California. Allan Hancock Pac 



Exped. 3(10) : 189-453, 47 pis. 

 1954. Marine Red Algae of Pacific Mexico. Part 2. Cryptonemiales (cent.) 



/Z'iJ. 17(2):241-397, 44pls. 



Foslie, M. 



1897. On some Lithothamia. Norske Vidensk. Selsk. Skr. 1897(1) : 1-20. 



1898. Some New or Critical Lithothamnia. Ibid. 1898(6) : 1-19. 



1900. Five New Calcareous Algae. Ibid. 1900(3) : 1-6. 



1900a. Revised Systematical Survey of the Melobesieae. Ibid. 1900(5) : 1-22. 

 1900b. Remarks on Melobesiae in Herbarium Crouan. Ibid. 1899(7) : 1-16. 



1901. New forms of Lithothamnia. Ibid. 1901(3) : 1-6. 

 1901a. New Melobesiae. Ibid. 1900(6) : 1-24. 



1905. Den botaniske Samling. Norske Vidensk. Selsk. Aarsberet. 1904: 15-18. 

 1907. Algologiske Notiser III. Norske Vidensk. Selsk. Skr. 1906(8) : 1-34. 

 1907a. Algologiske Notiser IV. Ibid. 1908(6) : 1-30. 



1909. Algologiske Notiser VI. Ibid. 1909(2) : 1-63. 



Foslie, M. and M. A. Howe 



1906. New American Coralline Algae. Bull. New York Bot. Gard. 4(13): 

 128-136, pis. 80-93. 



Hamel, G. et Mme P. Lemoine 



1953. Corallinacees de France et d'Afrique du Nord. Arch. Mus. Natl. d'Hist. 

 Nat., Paris, vii, 1:17-136, 23 pis. 



Hauck, F. 



1885. Die Meeresalgen Deutschlands und Oesterreichs. xxiv -j- 575 pp., 5 

 pis., 236 text-figs. Leipzig. 



