ZOOLOGY AND BOTANY, MICROSCOPY, ETV. 389 



Hybrid Fucus.* — M. Gard describes a hybrid between Fucus cera- 

 noides and F. vesiculosus, which he found at the entrance of theHossegor 

 pond at Cap Breton. Tbe hybrid grows among the parent-plants. 

 It has few vesicles, irregularly distributed. The frond is much branched, 

 and the branches form a sort of cyme, as in F. ceranoides. The plants 

 are unisexual, one only having proved to be hermaphrodite. The same 

 hybrid lias been found at La Tremblade and at Reville, near St. Waast- 

 la-Hougue. 



Phytobenthos of Quarnero.f — Y. Youk publishes an algal flora of 

 the Quarnero region, treating of the biological as well as the systematic 

 side. Seven different localities were examined, and tbe results are given. 

 Dredging was undertaken in a depth of 10-15 in., when certain of the 

 deeper species were obtained. 



Japanese Algae. + — K. Okamura continues bis " Icones of Japanese 

 Algae." In the present number figures and descriptions are published 

 of nine species, giving the habit and structure of each. Six of these 

 belong to the genus Codiwn, and the rest to Vidalia, Gompsopogon, and 

 Brachytrichia. 



Chinese Marine Algae .§ — A. D. Cotton publishes a list of thirty- 

 nine marine algae from Chinese waters, including for geographical reasons 

 the island of Formosa. Some of these were collected by P. H. Boyden 

 at Wei-hai-wei, and others, which are already incorporated in the Kew 

 Herbarium, belong to old collections, and have not hitherto been named 

 or published. Eleven species of Sargassum are recorded, and EcMonia 

 cava, which has only been found ' in Japan. The differences between 

 Gelidium Amansii and G. cartilagineum (Cape of Good Hope) are 

 pointed out. 



Marine Algae. ||— A. Mazza continues his studies of oceanic algology, 

 and gives an account of the morphology and structure of Gryptonemia 

 obovata and of six species of Thamnoclonium, two of which live in 

 symbiosis with sponges. 



Oxidases in Algae. U — G. B. Reed describes his methods for demon- 

 strating the presence of oxidases in the tissues of algae, and displays 

 Ins results in the form of a table. The material was placed in a .£ p.c. 

 watery solution of paraphenylenediamine, or in equal parts of \ p.c. 

 solution of paraphenylenediamine and alpha napthol ; and in each case 

 sufficient hydrogen peroxide was added to make the concentration 

 0*1 p.c. Results were similar in the two cases. In from half to ten 

 minutes the oxidation products appeared in the form of minute dark 

 granules, exhibiting slow Brownian movement and distributed through- 

 out the protoplasm, but never in the vacuole. In Vaucheria they tend 



* Comptes Rendus, elx. (1915) pp. 323-25. 



t Bull. Tray. Sci. Math. Nat. Acad. Sci. et Arts Slaves Sud Zagreb (Agram), 

 1914, No. 2, pp. 99-117. See also Bot. ('. ntralbl., cxxviii. (1915) p. 438. 

 t Icou. Jap. Algaj, iii. No. 7 (Tokyo, 1915) pp. 123-54 (pis. 131-5). 

 § Kew Bull.; 1915, pp. 107-13. 

 |1 La Nuova Notarisia, xxvi. (1915) pp. 49-75. 

 f Bot. Gaz., lix. (1915) pp. 407-9. 



Aug. 18th, 1 15 - e 



