ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 213 



which (with 163 plates) appeared in parts between 1898 and 1905, and 

 a supplement of 24 plates in 1913. The text forms a thick quarto 

 volume, with an introduction of 40 pages treating of the climate, the 

 moss-flora, distribution, etc. ; and a systematic part with descriptions 

 of, and critical remarks on, all the species, including a number which 

 are new to science, also keys to the species of some of the more 

 troublesome genera. 



Mosses of New Hebrides.*— V. F. Brotherus and W. W. Watts 

 give an account of the mosses collected by missionaries at various dates 

 in the islands Aneityum, Futuna and Santo of the New Hebrides — a 

 moss-flora of which little was known previously. One hundred and 

 thirty-seven species are enumerated ; and thirty-three of these are new 

 to science. The flora shows an affinity with that of Papua and the 

 Malay Islands, as well as with that of Fiji and Samoa. 



Mosses of the Philippine and Hawaiian Islands.f — P. S. Williams 

 gives an account of flfty-seven mosses from the Philippine Islands and 

 four from Hawaii, collected by the late J. B. Leiberg, and describes the 

 structure of four new species belonging respectively to the genera 

 Dicranella, Barhula, Hymenostomun, and Glaopodium. 



Thallopliyta. 

 Algse. 

 (By Mrs. Ethel S. Gepp.) 



Alternation of Generations. | — G. Janet publishes an account of the 

 sporophyto-gametophytic alternation of generations in the Algae, in which 

 he defines the holophyte and the orthophyte ; and discusses instances 

 of Alga3, whose orthophyte exhibits no alternation of generations 

 {Eudorina, Volvox, Diatome®, Fuciis) ; also of Algte, whose ortho- 

 phyte does present sporophytic-gametophytic alternation (tetraspori- 

 ferous Rhodophyceffi, Spirogyra) ; also Ulothrix zonata, an alga 

 representative of the ancestral form in which is established sporophyto- 

 gametophytic alternation. The discussion is set forth with much 

 detail and explanatory tables, and with tlie creation of new terms 

 for the more accurate expression of the author's meaning. 



Volvox. § — C. Janet, in a preliminary note on the egg of Volvox 

 glohator, states that : — 1. The constituent merisms of the orthophyte of 

 Volvox are, without exception, " blasteas." 2. The " blastea " which 

 constitutes the female " teleomerisme " of Volvox, and which is composed 



* Journ. Proc. Roy. New South Wales, xlix. (1915) pp. 127-57. 



t Bull. Torrey Bot. Club. xlii. (1915) pp. 571-77. 



j L'Alteruance sporophyto-gametophytique de generations chez les Algues. 

 Limoges : Ducourtieux et Gout (1914) 108 pp. (figs.). 



§ Note preliminaire sur I'oeuf du Volvox globatoi: Limoges : Ducourtieux et 

 Gout (1914) 12 pp. (figs.). 



April 19th, 1916 Q 



