ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 143 



nomy. Following the lead of Giesenliagen he develoxjs here an enlarged 

 system of growth-forms of mosses. He also publishes a map of the 

 Bolivian Eastern Cordillera, constructed according to the results of his 

 own careful explorations, and constituting the first trustworthy map of the 

 district. The whole work is one of the utmost importance to bryologists. 



Australian Sphagnacese.* — K. Kavina writes on the Sphagnacea^ 

 of Australia. He finds that of the twenty-four species occurring in 

 Eastern Australia only five are cosmopolitan. All the others are 

 endemic. Of the Acutifolium and Squarrosum groups no representative 

 has been found up to the present. A new species is described, inter- 

 mediate between Sphagnum Brother usiiWaYUst. and S. Scortechinii C. M. ; 

 and *S'. vitianum, hitherto only recorded from the Fiji Islands, was 

 found. 



Japanese Bryophyta.f — S. Okamura publishes a second contribution 

 to the moss-flora of Japan, and gives detailed descriptions of thirty-one 

 new species of mosses and three new varieties, also nine rare species 

 which are but little known, and a new hepatic ; and he gives figures of 

 their morphology and structure, and systematic keys to some of the 

 genera. The plants were collected in Hondo and Formosa for the most 

 part, and a few in Korea. 



Guide to Mosses. — Elizabeth Marie Dunham publishes " A Popular 

 Guide to the Mosses of the North-Eastern United States," containing 

 keys to 80 genera, and short descriptions of over 150 species, with 

 special reference to the distinguishing characteristics that are apparent 

 without the aid of a lens. For the genera tliere is a key to the leaves, 

 and a key to the capsules. The book is illustrated, and it has the merit 

 of calling attention to the mode of occurrence, substratum and sreneral 

 habitat of the moss-genera ; but naturally it omits the minute mosses. 



Thallophyta. 



Algae. 



(By Mrs. E. S. Gepp.) 



Fresh-wate" Algse.§ — F. E. Fritsch and F. Rieh continue theu- 

 studies on the occurrence and reproduction of British fresh-water algse 

 in Nature. The present contribution gives the result of a four-years' 

 observation of Barton's Pond, near Harpenden. In the introduction 

 the authors discuss the physical features of the pond, the meteorological 

 data, the flora of the pond, and the annual cycle in the flora. At the 



* Sitz.-ber. k. Bohm. Ges. Wiss. Math.-Nat,, Kl. ix. (1916) pp. 1-8 (fig.) See 

 also Bot. Centralbl., cxxxii. (1916) p. 351. 



t Journ. Coll. Sci. Iinper. Univ. Tokyo, xxxviii. Art. 4 (1916) 100 pp. (42 figs.). 



X Boston (Mass.) : Houghton Mifflin Company (1916) 287 pp. (figs.). See also 

 Bryologist, xix. (1916) pp. 74-5. 



§ Ann. Biol. Lacustre, vi. (1913) pp. 33-115 (3 Charts and 1 fig.). See also Bot. 

 Centralbl., cxxxii. (1916) pp. 324-7. 



