ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 345 



Thallophyta. 



Algae. 



(By Mrs. E. S. Gepp.) 



Marine Algae of the Channel Islands.* — H. van Heurck has pub- 

 lished a marine flora of these islands, founded on his own collections 

 and those of Piquet, White, Cattlow, Bovier-Lapierre, Marquand, and 

 others. After each species is given the list of localities in the islands 

 where it occurs, as well as a rough indication of the part of the French 

 coast from the Belgian frontier to Brest, whence it has been recorded. 

 References to literature, exsiccatee and illustrations are also given. One 

 new species is described and figured, Epilithon van HeurcTcii Heydrich, 

 which grows on Aglaosphenia. Following the enumeration of species is 

 a systematic table of genera, and finally a complete index with a certain 

 number of synonyms. The present work is only an abbreviated form 

 of a more important work on the subject which the author hopes to 

 publish later, containing descriptions and figures, in the style of the 

 Traite cles Diatomees. An article dealing with the geology and history 

 of the Channel Islands, by E. T. Xicolle, adds to the interest of the 

 books. 



Algae of Danzig Bay.j — Lakowitz publishes the results of his study 

 of this district during the last twenty years, based mainly on his own 

 collections. Neither Diatoms nor Flagellates are included, and the work 

 deals only with Rhodophyceee, Phreophycese, Chlorophyceae (including 

 CharaceEe), and Cyanophyceae. Certain new forms are described and 

 one new species, Goniotrichum simplex. Keys are given for the genera, 

 and the species are described in German, followed by critical remarks, 

 notes as to habitat, and geographical distribution. Many of the species 

 are figured in the text. The second part of the work deals with the 

 conditions of vegetation in the Bay of Danzig, and describes the dis- 

 trict, discussing the limits, conditions at various depths, the geological 

 composition of the substratum, the history of its origin, salinity, and 

 temperature, and the prevailing winds and ocean currents. In a 

 description of the vegetation the author treats of the component parts 

 of the vegetation, its horizontal distribution inside the Bay, distribution 

 in depth, the position of the flora of the Bay as regards geographical 

 distribution, the probable origin of the flora, and the importance of 

 algal vegetation as a factor in marine life. 



Fucaceae of Japan. % — K. Yendo publishes the complete account of 

 his studies on this subject, a preliminary notice of which appeared in 

 1905. The author has had considerable difficulty in identifying some 

 of the species from the wholly inadequate descriptions of earlier authors, 

 and out of the thirty-nine species of Sargassum hitherto regarded as 

 belonging to the Japanese flora only eighteen seem to him to be valid. 

 In a section of the book devoted to " Distribution of Fucaceous Algae 



* Society Jersiaise, Labey et Blarnpied, St. Helier (1908) xii. and 120 pp. 



t Algenflora der Danziger Bucht. Leipzig : Engelmann (1907), 141 pp., 70 figs. 



X Journ. Coll. Sci. Imper. Univ. Tokyo, xxi. (1907) 174 pp. (18 pis.). 



