ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 585 



Palmellacefe. Including Desmatractum plicafum, the authors describe 

 €5 now species and a considerable number of new varieties of already 

 existing species. A relatively large number of the same species occur 

 in Ceylon and Madagascar, and a great resemblance is also found 

 between the fresh-water algae of Ceylon and that of North Queensland. 

 Plnjmatodocis irregulare Schmidle, which has hitherto only been found 

 in East Africa, is here recorded from Ceylon. The paper is illustrated 

 with six quarto plates, containing numerous figures. 



British Marine Algse.* — E. A. L. Batters is publishing a list of 

 British Marine Algse, including the latest records and the result of his 

 own examination of the national and other herbaria. He gives the dis- 

 tribution of each species, and a note as to the rarity or otherwise of 

 their occurrence. Only such synonymy is given as is necessary for the 

 recognition of a species or variety. Up to the present time the Orders 

 Myxophyceae, Chlorospermeae, and part of Fucoideae have appeared. 



Marine Flora of the Gulf of Naples.f — A.'Mazza publishes a list 

 of 99 marine algae, collected at various points in the Gulf of Naples. 

 Critical notes are given on many of the species, and the list shows 

 several additions to the record of Falkenberg and Berthold. 



Algse of the Verona District.^— AchilleForti makes a fourth con- 

 tribution to his list of the Verona algae, including 176 Bacillarieae, 

 6 Peridinieae, 16 Flagellata, and 71 Myxophyceae. 



Algse of the Harriman Alaska Expedition^ — De Alton Saunders 

 publishes a list of 380 species collected during this expedition, giving 

 the locality of each species, and in many cases critical notes. Nine new 

 species are described : — Streblonema minutissima, S. pacifica, S. irregu- 

 laris, Homeostroma lobata, Coiiodesme linearis, Myelophycus intestinalis, 

 Mesogloia simplex, Maria fragilis, and Pleurophycus Gardneri. 



Mycetozoa and Fungi. 



Studies in Myxomycetes.il — A descriptive list of species from 

 Brazil has been published by E. Jahn on material collected by Alfred 

 Moller during his stay in Blumenau. Tropical forms had already been 

 recorded from the Old World by Baciborski, Penzig had described 

 species from Java, Lister from Antigua and Domenica, and Macbride 

 had included the species of Central America in his North American 

 Slime-moulds. M oiler's collections are the first gatherings of Myxo- 

 mycetes from Brazil. Jahn has distinguished 37 different species. 

 Many of them were already known from the tropics of Asia and from 

 North America. They are either absent from Europe, or occur there 

 only rarely. Climatic reasons scarcely account for such a distribution, 

 as they are found far to the north in America. He considers that the 

 wide dissemination of species is practically unhindered over the whole 

 Western continents, while in the Eastern hemisphere the broad steppes 



* Journ. Boi, xl. (1902) Supplement. 



t Nuova Notarisia, ser. xiii. (June -1902) pp. 125-52. 



X Tom. cit., pp. 97-124. 



§ Proc. Washington Acad. Sci., iii. (1901) pp. 391-486 (20 pla.). 



II Ber. Deutsch. Bot. Ges., xx. (1002) pp. 268-79 (1 pi.). 



