84 SUMMARY OF CURRENC RESEARCHES RELATING TO 



it a new name, Eecaton&ma Kjellmani, and adds a list of the synonymy, 

 with dates. Under IX the author pubhshes some new combinations 

 of j^gagropila and Ilea. 



Peyssonnelia polymorpha.* — Mdme. Lemoine and M. Mouret pub- 

 hsh a short account of the habit, structure and distribution of Peysson- 

 nelia polymorpha (Zan.) Schmitz, found lately at Toulon and thus 

 recorded for the first time from France. They attribute its apparent 

 rarity to its great resemblance to certain Melobesieae, which has caused 

 it to be wrongly placed in herbaria, and also to the depth at which it 

 grows, 20-40 m. Though it is recorded in the present paper from a 

 fair number of localities in the Mediterranean, it has yet to be found 

 in Atlantic waters. 



Rock-forming Corallinaceae.t — H. Yabe describes three new species, 

 representing two new genera, from the Palaeozoic and Mesozoic strata 

 in Japan and China. They are Girvanella sinensis, MetasoJenopora 

 Rothpletsi, and Petrophyton miyahoense. All the species are fully de- 

 scribed, and the structure of each is figured. 



Marine Algas of Clare Island. | — A. D. Cotton publishes a full 

 report on the marine flora of Clare Island in connexion with the natural 

 history survey of the Clew Bay district. After a short preface he 

 introduces his subject by a short definition of the area examined, a 

 discussion of previous work relating to the area, Avith remarks on field- 

 work and assistance. Under Section I, the external conditions of the 

 area, he describes (1) the climatic conditions ; (2) physical nature of 

 the coast and conditions of exposure. The ecological side of the 

 investigation is dealt with fully under Section II, the Algal Vegetation. 

 This important section of the work is followed by (III) the system- 

 atic list of the flora, consisting of 437 species and 36 varieties. Of 

 these, 3 species and 2 varieties are new to science, 18 species are addi- 

 tions to the British flora, and 92 species and 11 varieties are new to 

 Ireland. Critical notes on many of the records are given. Under Sec- 

 tion IV, the Character of the Flora, some interesting and important 

 deductions are made from the author's results, including an analysis of 

 the flora, comparison with other areas, and the origin of the flora. 

 The report is of the same nature as that published some five years ago 

 on the marine algas in the Danish work, The Botany of the Faeroes. 



Algse of La Hougue and Tatihou.§ — P. Hariot publishes a flora 

 of the marine algaj of La Hougue and the island of Tatihou in north- 

 west France. After a short introduction, he describes the local distri- 

 bution of the algge, gives lists of the species growing at the difi'erent 

 levels, a comparison between the floras of La Hougue and Cherbourg, 

 a list of the Cherbourg species which are not found at La Hougue, and 

 finally some remarks on the economic uses of the marine alga^ in the 



* Bull. Soc. Bot. France, lix. (1912) pp. 356-60. 



t Sci. Rep. Tohoku Imp. Univ'., Sendai, Japan, i. (1912) pp. 1-8 (2 pis.). 



: Proc. Koy. Irish Acad., xxxi. pt. 15 (1912) 178 pp. (11 pis.). 



§ Ann. Inst. Oc6anogr., iv, fasc. 5 (1912) 54 pp. (2 maps). 



