ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 219 



Algae from the Falkland Islands.* — A. D. Cotton publishes 

 a complete list of the marine algte of the Falkland Islands, based pri- 

 marily on the collections made thereby Mrs. Vallentin, and supplemented 

 by any previous records. Mrs. Valleutiu's notes on the shores where 

 the algie were collected are given verbatim, and contain interesting 

 information. During a severe gale many tons of algge are torn up and 

 hurled ashore, and the writer records the fact that on several occasions 

 during big storms, when the kelp was being torn up and the fronds 

 and stems broken by the fury of the elements, the mucilaginous 

 substance exuded from these broken alga? was so great that it had 

 almost the effect of oil in smoothing the crests of the waves. This was 

 at times so markedly the case that the rollers lost much of their danger. 

 Mr. Cotton deals at length with the interesting problems of geo- 

 graphical distribution, and compares the marine flora of the Falklands 

 with that of Kerguelen, the Australian region, and the Antarctic, 

 respectively. He finds that the algal flora of the Magellan region 

 is a subantarctic one of a distinct South American type. A systematic 

 list of the species is given, and critical notes are appended to many 

 of the records. Two new species are described. The Melobesiie are 

 described in a separate note by Madame Lemoine, accompanied by full 

 critical notes. She describes one new species. A systematic list of the 

 fresh-water alga? is given, compiled from Carlson's " Stisswasser- 

 algen" (1918). 



Japanese Algae. f — K. Yendo publishes a third chapter of notes on 

 Algae new to Japan, founded on the knowledge gained from an 

 inspection of the principal algological herbaria in Europe. The list 

 comprises species of Enteromorpha (2), Frasiola, Urospora, Spongo- 

 morpha, Cladophora, Bryopsis (4), Cliantransia, Goniotrichum, Porphyra, 

 MycJiodea (2), Ca/lop/rylUs, Rhabdonia, Tylotus, Plocamium, (3), Lopho- 

 siphonia, Farlowia, Rhododermis. Critical notes on structure, repro- 

 duction, distribution, economic uses, are included. 



Oceanic Algae. J — A. Mazza continues his studies of oceanic algae, 

 and describes the structure and morphology of three remaining 

 species of Dudresnaya, also the genus Dasyphloea (two species) Pikea 

 (one species), Farlowia (two species), Anderson iella (one species), Bay- 

 lesia (one species). These genera belong to the family Dumontiaceae. 



Fungi. 

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



Achlya and Saprolegnia.§ — A. J. Pieters has discovered and now 

 publishes new species of these two genera. He discusses the question 

 as to the production or non-production of oogonia in some species, find- 



• Journ. Linn. Soc, xliii. (1915) pp. 137-204 (7 pis.), 

 t Bot. Mag. Tokyo, xxix. (1915) pp. 99-117 (1 fig.), 

 t Nuov. Notar.,xxvi. (1915) pp. 181-206. 

 § Bot. Gaz., Ix. (1915) pp. 483-90 (1 pi.). 



