ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 437 



external appearance. The male and female conceptacles and tetraspores 

 are described. 



Chinese Marine Algae.*— E. S. Gepp publishes a list of twenty- 

 seven marine alga from Wei-hai-wei and Swatow. Two of them are 

 new species, Chordaria firma and Ceramhmi Boydenii. The original 

 diagnosis of Polysfphonia japonica is quoted, as it has been omitted 

 from J. G. Agardh's Species Ah/arum, and De Toni's Sylloge Algarum y 

 and the original place of publication is difficult of access. This plant 

 is figured, together with the two new species. 



Alaskan Algae.f — The algae of the Harriman Alaska expedition 

 were edited by A. Saunders, and the list of them which was originally 

 published in the Proceedings of the Washington Academy of Sciences, 

 1901, is now republished in a volume dealing with all the cryptogamic 

 collections of the expedition. The algas have been named by various 

 experts, and form an imposing list of 380 species, of which nine are 

 new to science and 240 are new to Alaska. The author makes some 

 interesting remarks on the general distribution of algae along the 

 Pacific coast of North America, dividing it into three distinct regions. 

 The first, or southern, extends from Point Conception southwards to 

 the equator, and is characterised by Nereocystis giganteus, Sargassum 

 agardhimium, Taonia Lenneb acker ce, Zonaria Toumefortii, and other 

 tropical species. The second, or Californian, region extends from Point 

 Conception on the south to Puget Sound on the north, and is charac- 

 terised by forms like Dictyoneuron, Postelsia, Laminaria Sinclairii, L. 

 Andersonii, etc. The northern region begins at Puget Sound and 

 extends northwards to and including Bering Sea. It is characterised 

 by Odonthalia ahvtica, Pohjsiphonia bipinnata, Enthora cristata, Rhody- 

 menia pertma, etc. 



Ambeeg, O.— Biologische Notiz uber den Lago di Muzzano. (Biological Note on 

 Lago di Muzzano.) Forschvngsber. Biol. Stat. PWn, x. (1903; pp. 74-85. 



„ „ TTntersuchung einiger Planktonproben aus demselben vom Sommer 

 1902. (Examination of several Plankton-samples from the same lake collected 

 in the summer of 1902.) Tom. cit., pp. 86-9. 



Bergon, P. — Etudes de la flore diatomique d'Arcachon et des parages voisins. 

 (Studies on the diatom-flora of Arcachon and the adjacent distiicts.) 



Lab. Biolog. Bordeaux (1903) 64 pp., 2 pis. col. 

 Geza, Entz, Jun.— Adatok a Balaton plaktoujanak ismeretehez. (Contributions to 

 a knowledge of the plankton of Platten-Luke.) 



A. Balaton, tudom. laimlm. eredm.,\i. supp. 2,-pt. I. 

 (Budapest 1903) 26 pp., 48 figs., 9 pis. 



Gomont, M.— Sur la vegetation de quelques sources d'eau douce sous-marines de la 

 Seine-Inferieure. (On the vegetation of certain fresh-water submarine springs of 

 the Department Seine-Infe'rieure.) 



[The complete paper, of which a preliminary notice had been published in 

 Comptes Rendus, and was noticed in the last Number of this Journal.] 



Bull. Soc. Bot. de France, li. (1904) pp. 36-55. 



Gran, H. H.— Diatomaceae from the Ice-floes and Plankton of the Arctic Ocean. 



Nansen's Norwegian North Polar Exped., iv. (1904) No. 1 1 . 



* Journ. Bot., xlii. (M)04) pp. 161-5 (1 pi.). 



t Harriman Alaska Expedition, v. (New York, 1904) pp. 155-251 (20 pi.). 



