ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 307 



wliole appendix with its plates and charts is of great importance to 

 students of Phfeophycea3, and might easily escape notice. The l)iblio- 

 graphies contain nearly 700 references to algological literature. Other 

 appendices treat of the ecological and economic aspect, the chemical 

 composition, the food value of algai, and the technology of the seaweed 

 industry. These' are by G. B. Rigg, F. M. McFarland, ^Y. C. Crandell, 

 and others. 



Japanese Marine Algge.* — K. Okamura publishes three more parts 

 of his Icones of Japanese Algje, wherein is figured and described the 

 morphology and structure of some seventeen marine alga3, and among 

 them the following new species : Bamj^hiia Tagoi, Pterosiphonia Jihril- 

 losa, Chondrla intricafa, Acetahidaria minutissima ; also Ghsetomorpha 

 spiralis, the name of which had been published without a diagnosis. 

 Tlie descriptions are in both English and Japanese ; and the plates 

 contain numerous figures of details requisite for systematic purposes. 

 Pan X completes the second volume, and includes an index. 



Fungi. 

 (By A. LoRRAiN Smith, F.L.S.). 



Muratella elegans.f — G. Bainier and A. Sartory found a mould on 

 dead twigs, with capitate conidiophores, on which were borne spinous 

 conidia. Some way below the main head a verticil of secondary conidio- 

 spores were formed. The mycelium was non-septate and on that account 

 the authors have placed the fungus among the Mortierell^e. The affini- 

 ties and characteristics of the fungus are described, and an account is 

 given of culture experiments. Attempts to find a sporangiferous form 

 have failed. 



Resting Spores of Piasmopara viticola.| — L. Ravaz and G. Verge 

 describe the germination of these oospores. In suitable conditions of 

 moisture the spore produces a short filament, at the tip of w^hich is 

 formed a conidium as large as the oospore. After all the protoplasm 

 of the oospore has passed into the conidium, a septum cuts it off from 

 the support, the contents become fragmented and a large number of 

 zoospores are formed which issue by an opening at the summit and 

 swim about in the drop of water. If the drop containing the zoospores 

 is applied to the under surface of the living leaf of Vitis vmifera, the 

 leaf becomes infested and conidiophores of the vine mildew are formed. 



New Peronospora.§ — The new fungus was observed in 1909 by 

 F. Vincens, in the botanical garden, Toulouse, on Cephalaria leucantha. 

 It forms a violet-grey felt on the under surface of the leaves w^hich are 

 rather deformed by the presence of the parasite. Oogonia were also 

 present in the tissues, but not very far down the stalk. Vincens con- 



* Icones of Japanese Algse. Tokyo : (1912j ii. Nos. 8-10, pp. 127-91 (pis. 86- 

 100). 



t BnU. Soc. Mycol. France, xxix. (1913) pp. 129-36 (8 pis.). 



: Comptes Rendus, clvi. (1913) pp. 800-2. 



§ Bull. Soc. Mycol. France, xxix. (1913) pp. 174-80 (1 pi.). 



