ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 509 



Antarctic Melobesie^e, Anatomical characters of the Antarctic Melo- 

 besiete, and a comparison between Arctic and Antarctic Melobesie^e. 

 The Arctic species number eighteen, the Antarctic twenty-two, and no 

 polar species is common to both regions, though the ubiquitous Litho- 

 thamnium Leiiormandl occurs in both floras. One character common 

 to the two regions is the rarity of epiphytic species, three only being 

 known from the Antarctic and two from the Arctic. The author con- 

 siders that too much importance has been given to the presence of 

 bispores in polar regions, and gives her reasons. It is impossible to 

 give an adequate resume of this valuable paper within a short space. 



Oceanic Algology.* — A. Mazza, continuing his studies of the 

 oceanic algae, gives an account of the Gloiosiphoniacefe, a family of the 

 order Cryptonemin^e, describing the structural characteristics of the 

 following four genera :—Schimmelmannia (with 3 species), Thuretella 

 (1), Glohosiphonia (2), Gloiopeltis (6) ; and adds a preliminary note on 

 the family Grrateloupiace^. 



Algae of the Murman Coast. f — E. S. Sinova publishes a paper on 

 the Chlorophyceje and Rhodophycea^ of the Murman coast in the North 

 of Finland, giving additions to our previous knowledge of that region. 

 She gives descriptions of the species with their synonymy ; and also 

 quotes exsiccat^e and specimens in private herbaria. Unfortunately for 

 foreign botanists, the work is entirely in Russian. Some of the figures 

 are specially to be commended. 



AlgSB of Lake Huron. J — A. B. Klugh, in publishing a list of twenty- 

 six Cyanophyceae and nineteen Chlorophyce^ collected in G-eorgian Bay, 

 Ontario, during September 1912, gives a description of Rlvularia lauren- 

 tkma, a new species characteristic of the Laurentian region, and locally 

 common on aquatic plants. 



Marine Algae of the Danish West Indies.§ — F. Borgesen con- 

 tributes a valuable addition to algal literature in his account of the 

 marine alg^ of the Danish West Indies. The present volume deals 

 only with the" Chlorophyce^ ; and in it the author gathers up all the 

 information previously published by him on the subject in scattered 

 papers, besides adding the latest results of his work. The fact that he 

 has collected all this mass of rich material himself enables him to add to 

 our knowledge of the habits and growth of the species recorded. Much 

 valuable information is also given as to the structure, illustrated by 

 figures in the text. A certain number of new species and forms are 

 described, and a new genus Ernodesmis is created for Valonia verticillata. 



* Nuov. Notar., xxiv. (1913) pp. 57-85, 113-31. 



t Trav. Soc. Imp. Nat. St. Petersbourg, xliii. (1912) s6r. 3, pp. 171-343 (46 figs, 

 and 2 raaps). 



t Rhodora, xv. (1913) pp. 88-92. 



§ Marine Algte of the Danish West Indies. Copenhagen : B. Luno (1913) 160 pp. 

 (1 chart and figs, in text). 



