BOTANY. 517 



2^ece, with special reference to the new genus Gonatonema, 

 in which the spores may be said to be parthenospores. 



A lengthy article on JP/iycochromacece, by Borzi, is to be 

 found in the Italian Journal of Botany. Professor Cohn notes 

 the occurrence of a new liivular la, in which there is no srelat- 

 inous envelope, in the River Leba; and Dr. Gobi has noticed 

 the same species near St. Petersburg. A very curious para- 

 site growing on Baurencia obtusa is described by Count 

 Solms-Laubach, on which lie founds a new genus, Janczew- 

 skia. Dr. Kjellmann describes witli great minuteness the 

 algae found on the shores of the Skager-Rack. The article 

 is accompanied by a chart of dredgings and soundings. In 

 the Austrian Journal of Botany^ Hauck continues his ac- 

 count of the algae of the Adriatic. Dr. Gobi, in the Memoirs 

 of the St. Petersburg Academy, has an account of the algae 

 of the White Sea. ISTordstedt has three papers : on some 

 Besmids collected in Italy and the Tyrol ; on some fresh- 

 water algae from Brazil ; and on some algae from the Sand- 

 wich Islands. Professor E. Percival Wright, of Dublin, has 

 made some interesting studies on the development of tetra- 

 spores in Polysiphonia. He finds that they are outgrowths 

 from the so-called central siphon. Professor Wright has 

 also distributed two papers on some parasites one belong- 

 ing to the genus Chlorochytrium, the other to Khizophy- 

 dium. One of the longest and most elaborate works on 

 algae which have appeared the present year is the second 

 volume of the " Cryptogamic Flora of Silesia." The algae 

 have been worked up by Dr. Kirchner, a student of Profess- 

 or Cohn, w r ho has himself contributed material. The work 

 is prefaced by a notice of the works of different algologists 

 who have studied the flora of Silesia. Some Papuan algae 

 are described by Zanardini in the Italian Journal of Bota- 

 ny ; Arctic algae have been described by Professor Dickie; 

 and algae from the Auckland Islands, by Rabenhorst. Mu- 

 nier-Chalmas has made the interesting discovery that a 

 number of fossils, which were presumed to be Foraminifera, 

 are, in reality, algae belonging to the order Sijihonacece, and 

 nearly related to Basycladus / and, strange to say, one of 

 the fossil species of the China Sea is found to be still living 

 near the island of Cuba. In the way of published exsicca- 

 ta, there have been issued several fasciculi of Rabenhorst's 



